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Full vulnerability report · 2026
CVE-2026-13221High confidence

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk

Unknown · Unknown

9.1CriticalCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.43% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Unknown and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourceperlVendor fix publishedDebian records a fixed source-package version for this release.5.40.1-6+deb13u1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourceperlVendor fix publishedDebian records a fixed source-package version for this release.5.36.0-7+deb12u4Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourceperlVendor fix publishedDebian records a fixed source-package version for this release.5.42.3-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourceperlVendor fix publishedDebian records a fixed source-package version for this release.5.42.3-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveperlVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.5.38.2-3.2ubuntu0.4Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-13221 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityperl: Perl: Incorrect regular expression processing via large regular expressions
67 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • perl as a component of Red Hat Enterprise Linux 6
  • perl-Archive-Extract as a component of Red Hat Enterprise Linux 6
  • perl-Archive-Tar as a component of Red Hat Enterprise Linux 6
  • perl-CGI as a component of Red Hat Enterprise Linux 6
  • perl-CPAN as a component of Red Hat Enterprise Linux 6
  • perl-CPANPLUS as a component of Red Hat Enterprise Linux 6
  • perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6
  • perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6
  • perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6
  • perl-Digest-SHA as a component of Red Hat Enterprise Linux 6
  • perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6
  • perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6
Summary
A flaw was found in Perl. When the Perl regular expression engine processes patterns with a very large number of alternative fixed strings, an internal data field can overflow. This leads to silently incorrect regular expression matches, causing the engine to either match strings it should not (false positives) or fail to match strings it should (false negatives). If these regular expressions are used for security-sensitive operations like access control or data filtering, this flaw could result in incorrect security decisions.
Remediation
For OpenShift Container Platform 4.22 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.22/html/release_notes/ You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags. The sha values for the release are as follows: (For x86_64 architecture) The image digest is sha256:55a0c0c8f9a285fa468009511dd878d5492436ceb4f0207933b6403d19353876 (For s390x architecture) The image digest is sha256:f45ad2f2c1d8a45f339a69879d6baa5f4e5ba0c922147bf75f8451fa4cf38847 (For ppc64le architecture) The image digest is sha256:f29efc92dccdd9133824f9f083576c900ca7800bb331095581144d1b982e37d2 (For aarch64 architecture) The image digest is sha256:dfebff37094c5a2921e1c4070878293727c48e6dc6754a88bd7bab91f0a3b869 All OpenShift Container Platform 4.22 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.22/html-single/updating_clusters/index#updating-cluster-cli.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-43503

No EUVD known-exploited evidence

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
9.1 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

What

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Integer Overflow or Wraparound → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-190 ↗

CWE-190: Integer Overflow or Wraparound. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-190
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-43503Official EUVD mapping

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2309Perl: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Perl ausnutzen, um einen Denial of Service Angriff durchzuführen oder vertrauliche Informationen offenzulegen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260715Security Bulletin 15 Jul 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 15 Jul 2026, published on 15 July 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1249Multiples vulnérabilités dans les produits VMware

?id=CVE-2026-103001 Référence CVE CVE-2026-11822 https://www.cve.org/CVERecord?id=CVE-2026-11822 Référence CVE CVE-2026-11824 https://www.cve.org/CVERecord?id=CVE-2026-11824 Référence CVE CVE-2026-11940 https://www.cve.org/CVERecord?id=CVE-2026-11940 Référence CVE CVE-2026-11972 https://www.cve.org/CVERecord?id=CVE-2026-11972 Référence CVE CVE-2026-11979 https://www.cve.org/CVERecord?id=CVE-2026-11979 Référence CVE CVE-2026-12003 https://www.cve.org/CVERecord?id=CVE-2026-12003 Référence CVE CVE-2026-12087 https://www.cve.org/CVERecord?id=CVE-2026-12087 Référence CVE CVE-2026-12912 https://www.cve.org/CVERecord?id=CVE-2026-12912 Référence CVE CVE-2026-13221 https://www.cve.org/CVERecord?id=CVE-2026-13221 Référence CVE CVE-2026-13346 https://www.cve.org/CVERecord?id=CVE-2026-13346 Référence CVE CVE-2026-13506 https://www.cve.org/CVERecord?id=CVE-2026-13506 Référence CVE CVE-2026-13595 https://www.cve.org/CVERecord?id=CVE-2026-13595 Référence CVE CVE-2026-13757 https://www.cve.org/CVERecord?id=CVE-2026-13757 Référence CVE CVE-2026-14164 https://www.cve.org/CVERecord?id=CVE-2026-14164 Référence CVE CVE-2026-14257 https://www.cve.org/CVERecord?id=CVE-2026-14257 Référence CVE CVE-2026-14456 https://www.cve.org/CVERecord?id=CVE-2026-14456 Référence CVE CVE-2026-14457 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-023828The Perl FoundationのPerlにおける整数オーバーフローの脆弱性

Perlのバージョン5.43.9まででは、65535以上の固定文字列の枝が並列選択としてPerl_study_chunkでトライにコンパイルされると、正規表現のマッチ結果が静かに誤ってしまいます。これらの枝がトライに結合される場合、最初の枝と共有される末尾部分とのデルタ値が16ビットのフィールドに格納されます。枝の数が65535を超えるとこのフィールドがオーバーフローし、トライのマッチ判定テーブルが警告やエラーなしに切り詰められてしまいます。この形状のパターンは、誤検出（本来はマッチすべきでない文字列とマッチすること）や誤否定（本来はマッチすべき文字列にマッチしないこと）を引き起こします。このようなパターンがアクセス制御やフィルタリングの判断に用いられる場合、結果が誤ったものとなります。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 13 Jul 2026 · Last source change 8 Sept 2026, 21:30 UTC · CWE-190 · Integer Overflow or Wraparound

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-43503
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-13221 to remediation: access.redhat.com/CVE-2026-13221.
    Before
    remediation: access.redhat.com/CVE-2026-13221
    After
    remediation: access.redhat.com/CVE-2026-13221
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl as a component of Red Hat Enterprise Linux 6; perl-Archive-Extract as a component of Red Hat Enterprise Linux 6; perl-Archive-Tar as a component of Red Hat Enterprise Linux 6; perl-CGI as a component of Red Hat Enterprise Linux 6; perl-CPAN as a component of Red Hat Enterprise Linux 6; perl-CPANPLUS as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6; perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-Digest-SHA as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-MakeMaker as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-ParseXS as a component of Red Hat Enterprise Linux 6; perl-File-Fetch as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Base as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-IO-Zlib as a component of Red Hat Enterprise Linux 6; perl-IPC-Cmd as a component of Red Hat Enterprise Linux 6; perl-Locale-Maketext-Simple as a component of Red Hat Enterprise Linux 6; perl-Log-Message as a component of Red Hat Enterprise Linux 6; perl-Log-Message-Simple as a component of Red Hat Enterprise Linux 6; perl-Module-Build as a component of Red Hat Enterprise Linux 6; perl-Module-CoreList as a component of Red Hat Enterprise Linux 6; perl-Module-Load as a component of Red Hat Enterprise Linux 6; perl-Module-Load-Conditional as a component of Red Hat Enterprise Linux 6; perl-Module-Loaded as a component of Red Hat Enterprise Linux 6; perl-Module-Pluggable as a component of Red Hat Enterprise Linux 6; perl-Object-Accessor as a component of Red Hat Enterprise Linux 6; and 37 more · Fixed: perl-4:5.40.2-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Attribute-Handlers-0:1.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoLoader-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoSplit-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Benchmark-0:1.25-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Class-Struct-0:0.68-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Config-Extensions-0:0.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DBM_Filter-0:0.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-SelfStubber-0:1.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DirHandle-0:1.05-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); and 1426 more
    After
    perl as a component of Red Hat Enterprise Linux 6; perl-Archive-Extract as a component of Red Hat Enterprise Linux 6; perl-Archive-Tar as a component of Red Hat Enterprise Linux 6; perl-CGI as a component of Red Hat Enterprise Linux 6; perl-CPAN as a component of Red Hat Enterprise Linux 6; perl-CPANPLUS as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6; perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-Digest-SHA as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-MakeMaker as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-ParseXS as a component of Red Hat Enterprise Linux 6; perl-File-Fetch as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Base as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-IO-Zlib as a component of Red Hat Enterprise Linux 6; perl-IPC-Cmd as a component of Red Hat Enterprise Linux 6; perl-Locale-Maketext-Simple as a component of Red Hat Enterprise Linux 6; perl-Log-Message as a component of Red Hat Enterprise Linux 6; perl-Log-Message-Simple as a component of Red Hat Enterprise Linux 6; perl-Module-Build as a component of Red Hat Enterprise Linux 6; perl-Module-CoreList as a component of Red Hat Enterprise Linux 6; perl-Module-Load as a component of Red Hat Enterprise Linux 6; perl-Module-Load-Conditional as a component of Red Hat Enterprise Linux 6; perl-Module-Loaded as a component of Red Hat Enterprise Linux 6; perl-Module-Pluggable as a component of Red Hat Enterprise Linux 6; perl-Object-Accessor as a component of Red Hat Enterprise Linux 6; and 37 more · Fixed: rhcos-aarch64-4.22.9.8.202609221802-0 as a component of Red Hat OpenShift Container Platform 4.22; rhcos-ppc64le-4.22.9.8.202609221802-0 as a component of Red Hat OpenShift Container Platform 4.22; rhcos-s390x-4.22.9.8.202609221802-0 as a component of Red Hat OpenShift Container Platform 4.22; rhcos-x86_64-4.22.9.8.202609221802-0 as a component of Red Hat OpenShift Container Platform 4.22; perl-4:5.40.2-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Attribute-Handlers-0:1.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoLoader-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoSplit-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Benchmark-0:1.25-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Class-Struct-0:0.68-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Config-Extensions-0:0.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DBM_Filter-0:0.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); and 1430 more
    Red Hat Product Security ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl as a component of Red Hat Enterprise Linux 6; perl-Archive-Extract as a component of Red Hat Enterprise Linux 6; perl-Archive-Tar as a component of Red Hat Enterprise Linux 6; perl-CGI as a component of Red Hat Enterprise Linux 6; perl-CPAN as a component of Red Hat Enterprise Linux 6; perl-CPANPLUS as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6; perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-Digest-SHA as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-MakeMaker as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-ParseXS as a component of Red Hat Enterprise Linux 6; perl-File-Fetch as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Base as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-IO-Zlib as a component of Red Hat Enterprise Linux 6; perl-IPC-Cmd as a component of Red Hat Enterprise Linux 6; perl-Locale-Maketext-Simple as a component of Red Hat Enterprise Linux 6; perl-Log-Message as a component of Red Hat Enterprise Linux 6; perl-Log-Message-Simple as a component of Red Hat Enterprise Linux 6; perl-Module-Build as a component of Red Hat Enterprise Linux 6; perl-Module-CoreList as a component of Red Hat Enterprise Linux 6; perl-Module-Load as a component of Red Hat Enterprise Linux 6; perl-Module-Load-Conditional as a component of Red Hat Enterprise Linux 6; perl-Module-Loaded as a component of Red Hat Enterprise Linux 6; perl-Module-Pluggable as a component of Red Hat Enterprise Linux 6; perl-Object-Accessor as a component of Red Hat Enterprise Linux 6; and 37 more · Fixed: perl-4:5.40.2-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Attribute-Handlers-0:1.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoLoader-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoSplit-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Benchmark-0:1.25-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Class-Struct-0:0.68-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Config-Extensions-0:0.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DBM_Filter-0:0.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-SelfStubber-0:1.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DirHandle-0:1.05-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); and 1425 more
    After
    perl as a component of Red Hat Enterprise Linux 6; perl-Archive-Extract as a component of Red Hat Enterprise Linux 6; perl-Archive-Tar as a component of Red Hat Enterprise Linux 6; perl-CGI as a component of Red Hat Enterprise Linux 6; perl-CPAN as a component of Red Hat Enterprise Linux 6; perl-CPANPLUS as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6; perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-Digest-SHA as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-MakeMaker as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-ParseXS as a component of Red Hat Enterprise Linux 6; perl-File-Fetch as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Base as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-IO-Zlib as a component of Red Hat Enterprise Linux 6; perl-IPC-Cmd as a component of Red Hat Enterprise Linux 6; perl-Locale-Maketext-Simple as a component of Red Hat Enterprise Linux 6; perl-Log-Message as a component of Red Hat Enterprise Linux 6; perl-Log-Message-Simple as a component of Red Hat Enterprise Linux 6; perl-Module-Build as a component of Red Hat Enterprise Linux 6; perl-Module-CoreList as a component of Red Hat Enterprise Linux 6; perl-Module-Load as a component of Red Hat Enterprise Linux 6; perl-Module-Load-Conditional as a component of Red Hat Enterprise Linux 6; perl-Module-Loaded as a component of Red Hat Enterprise Linux 6; perl-Module-Pluggable as a component of Red Hat Enterprise Linux 6; perl-Object-Accessor as a component of Red Hat Enterprise Linux 6; and 37 more · Fixed: perl-4:5.40.2-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Attribute-Handlers-0:1.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoLoader-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoSplit-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Benchmark-0:1.25-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Class-Struct-0:0.68-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Config-Extensions-0:0.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DBM_Filter-0:0.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-SelfStubber-0:1.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DirHandle-0:1.05-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); and 1426 more
    Red Hat Product Security ↗
  4. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-13221 to remediation: access.redhat.com/CVE-2026-13221.
    Before
    remediation: access.redhat.com/CVE-2026-13221
    After
    remediation: access.redhat.com/CVE-2026-13221
    Red Hat Product Security ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl as a component of Red Hat Enterprise Linux 10; perl-Attribute-Handlers as a component of Red Hat Enterprise Linux 10; perl-AutoLoader as a component of Red Hat Enterprise Linux 10; perl-AutoSplit as a component of Red Hat Enterprise Linux 10; perl-B as a component of Red Hat Enterprise Linux 10; perl-Benchmark as a component of Red Hat Enterprise Linux 10; perl-Class-Struct as a component of Red Hat Enterprise Linux 10; perl-Config-Extensions as a component of Red Hat Enterprise Linux 10; perl-DBM_Filter as a component of Red Hat Enterprise Linux 10; perl-Devel-Peek as a component of Red Hat Enterprise Linux 10; perl-Devel-SelfStubber as a component of Red Hat Enterprise Linux 10; perl-DirHandle as a component of Red Hat Enterprise Linux 10; perl-Dumpvalue as a component of Red Hat Enterprise Linux 10; perl-DynaLoader as a component of Red Hat Enterprise Linux 10; perl-English as a component of Red Hat Enterprise Linux 10; perl-Errno as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Constant as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Miniperl as a component of Red Hat Enterprise Linux 10; perl-Fcntl as a component of Red Hat Enterprise Linux 10; perl-File-Basename as a component of Red Hat Enterprise Linux 10; perl-File-Compare as a component of Red Hat Enterprise Linux 10; perl-File-Copy as a component of Red Hat Enterprise Linux 10; perl-File-DosGlob as a component of Red Hat Enterprise Linux 10; perl-File-Find as a component of Red Hat Enterprise Linux 10; perl-File-stat as a component of Red Hat Enterprise Linux 10; perl-FileCache as a component of Red Hat Enterprise Linux 10; perl-FileHandle as a component of Red Hat Enterprise Linux 10; perl-FindBin as a component of Red Hat Enterprise Linux 10; perl-GDBM_File as a component of Red Hat Enterprise Linux 10; and 293 more · Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    After
    perl as a component of Red Hat Enterprise Linux 6; perl-Archive-Extract as a component of Red Hat Enterprise Linux 6; perl-Archive-Tar as a component of Red Hat Enterprise Linux 6; perl-CGI as a component of Red Hat Enterprise Linux 6; perl-CPAN as a component of Red Hat Enterprise Linux 6; perl-CPANPLUS as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-Compress-Raw-Zlib as a component of Red Hat Enterprise Linux 6; perl-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-Digest-SHA as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-CBuilder as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-MakeMaker as a component of Red Hat Enterprise Linux 6; perl-ExtUtils-ParseXS as a component of Red Hat Enterprise Linux 6; perl-File-Fetch as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Base as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Bzip2 as a component of Red Hat Enterprise Linux 6; perl-IO-Compress-Zlib as a component of Red Hat Enterprise Linux 6; perl-IO-Zlib as a component of Red Hat Enterprise Linux 6; perl-IPC-Cmd as a component of Red Hat Enterprise Linux 6; perl-Locale-Maketext-Simple as a component of Red Hat Enterprise Linux 6; perl-Log-Message as a component of Red Hat Enterprise Linux 6; perl-Log-Message-Simple as a component of Red Hat Enterprise Linux 6; perl-Module-Build as a component of Red Hat Enterprise Linux 6; perl-Module-CoreList as a component of Red Hat Enterprise Linux 6; perl-Module-Load as a component of Red Hat Enterprise Linux 6; perl-Module-Load-Conditional as a component of Red Hat Enterprise Linux 6; perl-Module-Loaded as a component of Red Hat Enterprise Linux 6; perl-Module-Pluggable as a component of Red Hat Enterprise Linux 6; perl-Object-Accessor as a component of Red Hat Enterprise Linux 6; and 37 more · Fixed: perl-4:5.40.2-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-4:5.40.2-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Attribute-Handlers-0:1.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoLoader-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-AutoSplit-0:5.74-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-B-debuginfo-0:1.89-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Benchmark-0:1.25-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Class-Struct-0:0.68-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Config-Extensions-0:0.03-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DBM_Filter-0:0.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-Peek-debuginfo-0:1.34-515.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-Devel-SelfStubber-0:1.06-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); perl-DirHandle-0:1.05-515.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); and 1425 more
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl: ≤ 5.43.9 · Fixed: Apply the upstream patch. The fix is included in the Perl 5.43.10 development release.
    After
    < 5.40.5-RC1, 5.41.0 < 5.42.3-RC1, 5.43.0 < 5.43.10 · Fixed: Upgrade to Perl 5.40.5, 5.42.3 or 5.44.0 or later, or apply the upstream patch.
    CNA ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    ≤ 5.43.9 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    < 5.40.5-RC1; 5.41.0 < 5.42.3-RC1; 5.43.0 < 5.43.10 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl as a component of Red Hat Enterprise Linux 10; perl-Attribute-Handlers as a component of Red Hat Enterprise Linux 10; perl-AutoLoader as a component of Red Hat Enterprise Linux 10; perl-AutoSplit as a component of Red Hat Enterprise Linux 10; perl-B as a component of Red Hat Enterprise Linux 10; perl-Benchmark as a component of Red Hat Enterprise Linux 10; perl-Class-Struct as a component of Red Hat Enterprise Linux 10; perl-Config-Extensions as a component of Red Hat Enterprise Linux 10; perl-DBM_Filter as a component of Red Hat Enterprise Linux 10; perl-Devel-Peek as a component of Red Hat Enterprise Linux 10; perl-Devel-SelfStubber as a component of Red Hat Enterprise Linux 10; perl-DirHandle as a component of Red Hat Enterprise Linux 10; perl-Dumpvalue as a component of Red Hat Enterprise Linux 10; perl-DynaLoader as a component of Red Hat Enterprise Linux 10; perl-English as a component of Red Hat Enterprise Linux 10; perl-Errno as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Constant as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Miniperl as a component of Red Hat Enterprise Linux 10; perl-Fcntl as a component of Red Hat Enterprise Linux 10; perl-File-Basename as a component of Red Hat Enterprise Linux 10; perl-File-Compare as a component of Red Hat Enterprise Linux 10; perl-File-Copy as a component of Red Hat Enterprise Linux 10; perl-File-DosGlob as a component of Red Hat Enterprise Linux 10; perl-File-Find as a component of Red Hat Enterprise Linux 10; perl-File-stat as a component of Red Hat Enterprise Linux 10; perl-FileCache as a component of Red Hat Enterprise Linux 10; perl-FileHandle as a component of Red Hat Enterprise Linux 10; perl-FindBin as a component of Red Hat Enterprise Linux 10; perl-GDBM_File as a component of Red Hat Enterprise Linux 10; and 292 more · Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    After
    perl as a component of Red Hat Enterprise Linux 10; perl-Attribute-Handlers as a component of Red Hat Enterprise Linux 10; perl-AutoLoader as a component of Red Hat Enterprise Linux 10; perl-AutoSplit as a component of Red Hat Enterprise Linux 10; perl-B as a component of Red Hat Enterprise Linux 10; perl-Benchmark as a component of Red Hat Enterprise Linux 10; perl-Class-Struct as a component of Red Hat Enterprise Linux 10; perl-Config-Extensions as a component of Red Hat Enterprise Linux 10; perl-DBM_Filter as a component of Red Hat Enterprise Linux 10; perl-Devel-Peek as a component of Red Hat Enterprise Linux 10; perl-Devel-SelfStubber as a component of Red Hat Enterprise Linux 10; perl-DirHandle as a component of Red Hat Enterprise Linux 10; perl-Dumpvalue as a component of Red Hat Enterprise Linux 10; perl-DynaLoader as a component of Red Hat Enterprise Linux 10; perl-English as a component of Red Hat Enterprise Linux 10; perl-Errno as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Constant as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Miniperl as a component of Red Hat Enterprise Linux 10; perl-Fcntl as a component of Red Hat Enterprise Linux 10; perl-File-Basename as a component of Red Hat Enterprise Linux 10; perl-File-Compare as a component of Red Hat Enterprise Linux 10; perl-File-Copy as a component of Red Hat Enterprise Linux 10; perl-File-DosGlob as a component of Red Hat Enterprise Linux 10; perl-File-Find as a component of Red Hat Enterprise Linux 10; perl-File-stat as a component of Red Hat Enterprise Linux 10; perl-FileCache as a component of Red Hat Enterprise Linux 10; perl-FileHandle as a component of Red Hat Enterprise Linux 10; perl-FindBin as a component of Red Hat Enterprise Linux 10; perl-GDBM_File as a component of Red Hat Enterprise Linux 10; and 293 more · Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    After
    perl as a component of Red Hat Enterprise Linux 10; perl-Attribute-Handlers as a component of Red Hat Enterprise Linux 10; perl-AutoLoader as a component of Red Hat Enterprise Linux 10; perl-AutoSplit as a component of Red Hat Enterprise Linux 10; perl-B as a component of Red Hat Enterprise Linux 10; perl-Benchmark as a component of Red Hat Enterprise Linux 10; perl-Class-Struct as a component of Red Hat Enterprise Linux 10; perl-Config-Extensions as a component of Red Hat Enterprise Linux 10; perl-DBM_Filter as a component of Red Hat Enterprise Linux 10; perl-Devel-Peek as a component of Red Hat Enterprise Linux 10; perl-Devel-SelfStubber as a component of Red Hat Enterprise Linux 10; perl-DirHandle as a component of Red Hat Enterprise Linux 10; perl-Dumpvalue as a component of Red Hat Enterprise Linux 10; perl-DynaLoader as a component of Red Hat Enterprise Linux 10; perl-English as a component of Red Hat Enterprise Linux 10; perl-Errno as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Constant as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Embed as a component of Red Hat Enterprise Linux 10; perl-ExtUtils-Miniperl as a component of Red Hat Enterprise Linux 10; perl-Fcntl as a component of Red Hat Enterprise Linux 10; perl-File-Basename as a component of Red Hat Enterprise Linux 10; perl-File-Compare as a component of Red Hat Enterprise Linux 10; perl-File-Copy as a component of Red Hat Enterprise Linux 10; perl-File-DosGlob as a component of Red Hat Enterprise Linux 10; perl-File-Find as a component of Red Hat Enterprise Linux 10; perl-File-stat as a component of Red Hat Enterprise Linux 10; perl-FileCache as a component of Red Hat Enterprise Linux 10; perl-FileHandle as a component of Red Hat Enterprise Linux 10; perl-FindBin as a component of Red Hat Enterprise Linux 10; perl-GDBM_File as a component of Red Hat Enterprise Linux 10; and 292 more · Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  10. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-13221 to remediation: access.redhat.com/CVE-2026-13221.
    Before
    remediation: access.redhat.com/CVE-2026-13221
    After
    remediation: access.redhat.com/CVE-2026-13221
    Red Hat Product Security ↗
  11. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  12. Affected versionsThe structured affected or fixed version information changed.
    Before
    perl.src as a component of Red Hat Hardened Images
    After
    Fixed: perl-main@aarch64 as a component of Red Hat Hardened Images; perl-main@noarch as a component of Red Hat Hardened Images; perl-main@src as a component of Red Hat Hardened Images; perl-main@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  13. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 5.40.5-RC1; 5.41.0 < 5.42.3-RC1; 5.43.0 < 5.43.10 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    perl: ≤ 5.43.9 · Fixed: Apply the upstream patch. The fix is included in the Perl 5.43.10 development release.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-43503↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-13221 · cve.blacktree.nl