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Full vulnerability report · 2026
CVE-2026-82209High confidence

domain-scoped PSL domain cookie

curl · curl

8.2HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. 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 severityHighOperational priority:Critical, raised one band.upgradedsince 8 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.37% 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.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs curl curl 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

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

6 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 2 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

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
Alpine v3.23v3.23 · maincurlVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.8.22.0-r0Alpine Security Database ↗Source updated 3 Oct 2026
Debian trixietrixie · sourcecurlAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcecurlAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.8.22.0-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.8.22.0-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivecurlVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.8.5.0-2ubuntu10.15Canonical 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-2026-82209 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitycurl: libcurl: Information disclosure via improper Public Suffix List boundary check
19 known affected

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

  • curl as a component of Red Hat Enterprise Linux 10
  • curl.src as a component of Red Hat Enterprise Linux 10
  • libcurl as a component of Red Hat Enterprise Linux 10
  • libcurl-devel as a component of Red Hat Enterprise Linux 10
  • libcurl-minimal as a component of Red Hat Enterprise Linux 10
  • curl as a component of Red Hat Enterprise Linux 8
  • curl.src as a component of Red Hat Enterprise Linux 8
  • libcurl as a component of Red Hat Enterprise Linux 8
  • libcurl-devel as a component of Red Hat Enterprise Linux 8
  • libcurl-minimal as a component of Red Hat Enterprise Linux 8
  • curl as a component of Red Hat Enterprise Linux 9
  • curl-minimal as a component of Red Hat Enterprise Linux 9
Summary
A flaw was found in libcurl when libpsl support is enabled. A remote attacker could exploit this vulnerability by setting a `Set-Cookie` header with a `Domain` attribute that explicitly matches a public suffix. This improper handling causes libcurl to save the cookie with a wildcard domain scope, leading to the cookie being inappropriately sent to arbitrary sibling subdomains under the same public suffix. This could result in sensitive information disclosure.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
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-2026-72153

No EUVD known-exploited evidence

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

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
8.2 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. 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

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

What

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

Why

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

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

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

Why

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Insertion of Sensitive Information Into Sent Data → 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-201 ↗

CWE-201: Insertion of Sensitive Information Into Sent Data. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

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:L/I:H/A:N

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.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
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-201Public exploit reference
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-72153Official EUVD mapping

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).

Official EUVD record ↗
BSI · German · WID-SEC-2026-3642Meinberg LANTIME: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Denial-of-Service-Zustände herbeizuführen, sowie weitere, nicht näher spezifizierte Angriffe zu starten.

Official advisory ↗
BSI · German · WID-SEC-2026-3149cURL: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Sicherheitsmechanismen zu umgehen, Informationen offenzulegen und einen Denial-of-Service-Zustand herbeizuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260909Security Bulletin 9 Sep 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 9 Sep 2026, published on 9 September 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1108Multiples vulnérabilités dans Curl

De multiples vulnérabilités ont été découvertes dans Curl. Certaines d'entre elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-033350HaxxのcURLにおける送信データへの重要な情報の挿入に関する脆弱性

libpslサポートが有効な場合、libcurlはPublic Suffix Listの境界チェックを強制できず、`Set-Cookie`ヘッダーの処理時に`Domain`属性がパブリックサフィックスである元のホスト（例：`co.uk`が`co.uk`によって設定されている）と明示的に一致すると処理が失敗します。libcurlはこれを厳密なホスト専用クッキーに強制せず、ワイルドカードドメインスコープ（`.co.uk`）でクッキーを保存します。その結果、このクッキーは不適切に後続の送信リクエストや、同じパブリックサフィックス下の任意の兄弟サブドメイン（例：`attacker.co.uk`）へのHTTPリダイレクトに含まれてしまいます。

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
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 6 Sept 2026 · Last source change 15 Sept 2026, 06:03 UTC · CWE-201 · Insertion of Sensitive Information Into Sent Data

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-08
European sourceENISA EUVD · EUVD-2026-72153
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    curl: 7.46.0 < 8.14.2, 8.15.0 < 8.16.1, 8.17.0 < 8.20.1, 8.21.0 < 8.22.0, e77b5b7453c1e8ccd7ec0816890d98e2f392e465 < 95c1e8915dce64606bd753fd47fc0bd236e31cd6, 8.21.0, 8.20.0, 8.19.0, 8.18.0, 8.17.0, 8.16.0, 8.15.0, 8.14.1, 8.14.0, 8.13.0, 8.12.1, 8.12.0, 8.11.1, 8.11.0, 8.10.1, 8.10.0, 8.9.1, 8.9.0, 8.8.0, 8.7.1, 8.7.0, 8.6.0, 8.5.0, 8.4.0, 8.3.0, 8.2.1, 8.2.0, 8.1.2, 8.1.1, 8.1.0, 8.0.1, 8.0.0, 7.88.1, 7.88.0, 7.87.0, 7.86.0, 7.85.0, 7.84.0, 7.83.1, 7.83.0, 7.82.0, 7.81.0, 7.80.0, 7.79.1, 7.79.0, 7.78.0, 7.77.0, 7.76.1, 7.76.0, 7.75.0, 7.74.0, 7.73.0, 7.72.0, 7.71.1, 7.71.0, 7.70.0, 7.69.1, 7.69.0, 7.68.0, 7.67.0, 7.66.0, 7.65.3, 7.65.2, 7.65.1, 7.65.0, 7.64.1, 7.64.0, 7.63.0, 7.62.0, 7.61.1, 7.61.0, 7.60.0, 7.59.0, 7.58.0, 7.57.0, 7.56.1, 7.56.0, 7.55.1, 7.55.0, 7.54.1, 7.54.0, 7.53.1, 7.53.0, 7.52.1, 7.52.0, 7.51.0, 7.50.3, 7.50.2, 7.50.1, 7.50.0, 7.49.1, 7.49.0, 7.48.0, 7.47.1, 7.47.0, 7.46.0 · 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
    curl: 7.46.0 < 8.14.2, 8.15.0 < 8.16.1, 8.17.0 < 8.20.1, 8.21.0 < 8.22.0, e77b5b7453c1e8ccd7ec0816890d98e2f392e465 < 95c1e8915dce64606bd753fd47fc0bd236e31cd6, 8.21.0, 8.20.0, 8.19.0, 8.18.0, 8.17.0, 8.16.0, 8.15.0, 8.14.1, 8.14.0, 8.13.0, 8.12.1, 8.12.0, 8.11.1, 8.11.0, 8.10.1, 8.10.0, 8.9.1, 8.9.0, 8.8.0, 8.7.1, 8.7.0, 8.6.0, 8.5.0, 8.4.0, 8.3.0, 8.2.1, 8.2.0, 8.1.2, 8.1.1, 8.1.0, 8.0.1, 8.0.0, 7.88.1, 7.88.0, 7.87.0, 7.86.0, 7.85.0, 7.84.0, 7.83.1, 7.83.0, 7.82.0, 7.81.0, 7.80.0, 7.79.1, 7.79.0, 7.78.0, 7.77.0, 7.76.1, 7.76.0, 7.75.0, 7.74.0, 7.73.0, 7.72.0, 7.71.1, 7.71.0, 7.70.0, 7.69.1, 7.69.0, 7.68.0, 7.67.0, 7.66.0, 7.65.3, 7.65.2, 7.65.1, 7.65.0, 7.64.1, 7.64.0, 7.63.0, 7.62.0, 7.61.1, 7.61.0, 7.60.0, 7.59.0, 7.58.0, 7.57.0, 7.56.1, 7.56.0, 7.55.1, 7.55.0, 7.54.1, 7.54.0, 7.53.1, 7.53.0, 7.52.1, 7.52.0, 7.51.0, 7.50.3, 7.50.2, 7.50.1, 7.50.0, 7.49.1, 7.49.0, 7.48.0, 7.47.1, 7.47.0, 7.46.0 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    Red Hat Product Security ↗
  2. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-82209 to remediation: access.redhat.com/CVE-2026-82209.
    Before
    remediation: access.redhat.com/CVE-2026-82209
    After
    remediation: access.redhat.com/CVE-2026-82209
    Red Hat Product Security ↗
  3. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces
    After
    curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces · Fixed: curl-0:8.22.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; curl-0:8.22.0-0.1.hum1@src as a component of Red Hat Hardened Images; curl-0:8.22.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; libcurl-0:8.22.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; libcurl-0:8.22.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; libcurl-devel-0:8.22.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; libcurl-devel-0:8.22.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; libcurl-minimal-0:8.22.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; libcurl-minimal-0:8.22.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    curl.src as a component of Red Hat Hardened Images
    After
    curl as a component of Red Hat Enterprise Linux 10; curl.src as a component of Red Hat Enterprise Linux 10; libcurl as a component of Red Hat Enterprise Linux 10; libcurl-devel as a component of Red Hat Enterprise Linux 10; libcurl-minimal as a component of Red Hat Enterprise Linux 10; curl as a component of Red Hat Enterprise Linux 8; curl.src as a component of Red Hat Enterprise Linux 8; libcurl as a component of Red Hat Enterprise Linux 8; libcurl-devel as a component of Red Hat Enterprise Linux 8; libcurl-minimal as a component of Red Hat Enterprise Linux 8; curl as a component of Red Hat Enterprise Linux 9; curl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Enterprise Linux 9; libcurl as a component of Red Hat Enterprise Linux 9; libcurl-devel as a component of Red Hat Enterprise Linux 9; libcurl-minimal as a component of Red Hat Enterprise Linux 9; curl.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4; devspaces/code-rhel9 as a component of Red Hat OpenShift Dev Spaces
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    curl: 8.21.0 ≤ 8.21.0, 8.20.0 ≤ 8.20.0, 8.19.0 ≤ 8.19.0, 8.18.0 ≤ 8.18.0, 8.17.0 ≤ 8.17.0, 8.16.0 ≤ 8.16.0, 8.15.0 ≤ 8.15.0, 8.14.1 ≤ 8.14.1, 8.14.0 ≤ 8.14.0, 8.13.0 ≤ 8.13.0, 8.12.1 ≤ 8.12.1, 8.12.0 ≤ 8.12.0, 8.11.1 ≤ 8.11.1, 8.11.0 ≤ 8.11.0, 8.10.1 ≤ 8.10.1, 8.10.0 ≤ 8.10.0, 8.9.1 ≤ 8.9.1, 8.9.0 ≤ 8.9.0, 8.8.0 ≤ 8.8.0, 8.7.1 ≤ 8.7.1, 8.7.0 ≤ 8.7.0, 8.6.0 ≤ 8.6.0, 8.5.0 ≤ 8.5.0, 8.4.0 ≤ 8.4.0, 8.3.0 ≤ 8.3.0, 8.2.1 ≤ 8.2.1, 8.2.0 ≤ 8.2.0, 8.1.2 ≤ 8.1.2, 8.1.1 ≤ 8.1.1, 8.1.0 ≤ 8.1.0, 8.0.1 ≤ 8.0.1, 8.0.0 ≤ 8.0.0, 7.88.1 ≤ 7.88.1, 7.88.0 ≤ 7.88.0, 7.87.0 ≤ 7.87.0, 7.86.0 ≤ 7.86.0, 7.85.0 ≤ 7.85.0, 7.84.0 ≤ 7.84.0, 7.83.1 ≤ 7.83.1, 7.83.0 ≤ 7.83.0, 7.82.0 ≤ 7.82.0, 7.81.0 ≤ 7.81.0, 7.80.0 ≤ 7.80.0, 7.79.1 ≤ 7.79.1, 7.79.0 ≤ 7.79.0, 7.78.0 ≤ 7.78.0, 7.77.0 ≤ 7.77.0, 7.76.1 ≤ 7.76.1, 7.76.0 ≤ 7.76.0, 7.75.0 ≤ 7.75.0, 7.74.0 ≤ 7.74.0, 7.73.0 ≤ 7.73.0, 7.72.0 ≤ 7.72.0, 7.71.1 ≤ 7.71.1, 7.71.0 ≤ 7.71.0, 7.70.0 ≤ 7.70.0, 7.69.1 ≤ 7.69.1, 7.69.0 ≤ 7.69.0, 7.68.0 ≤ 7.68.0, 7.67.0 ≤ 7.67.0, 7.66.0 ≤ 7.66.0, 7.65.3 ≤ 7.65.3, 7.65.2 ≤ 7.65.2, 7.65.1 ≤ 7.65.1, 7.65.0 ≤ 7.65.0, 7.64.1 ≤ 7.64.1, 7.64.0 ≤ 7.64.0, 7.63.0 ≤ 7.63.0, 7.62.0 ≤ 7.62.0, 7.61.1 ≤ 7.61.1, 7.61.0 ≤ 7.61.0, 7.60.0 ≤ 7.60.0, 7.59.0 ≤ 7.59.0, 7.58.0 ≤ 7.58.0, 7.57.0 ≤ 7.57.0, 7.56.1 ≤ 7.56.1, 7.56.0 ≤ 7.56.0, 7.55.1 ≤ 7.55.1, 7.55.0 ≤ 7.55.0, 7.54.1 ≤ 7.54.1, 7.54.0 ≤ 7.54.0, 7.53.1 ≤ 7.53.1, 7.53.0 ≤ 7.53.0, 7.52.1 ≤ 7.52.1, 7.52.0 ≤ 7.52.0, 7.51.0 ≤ 7.51.0, 7.50.3 ≤ 7.50.3, 7.50.2 ≤ 7.50.2, 7.50.1 ≤ 7.50.1, 7.50.0 ≤ 7.50.0, 7.49.1 ≤ 7.49.1, 7.49.0 ≤ 7.49.0, 7.48.0 ≤ 7.48.0, 7.47.1 ≤ 7.47.1, 7.47.0 ≤ 7.47.0, 7.46.0 ≤ 7.46.0 · 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
    curl: 7.46.0 < 8.14.2, 8.15.0 < 8.16.1, 8.17.0 < 8.20.1, 8.21.0 < 8.22.0, e77b5b7453c1e8ccd7ec0816890d98e2f392e465 < 95c1e8915dce64606bd753fd47fc0bd236e31cd6, 8.21.0, 8.20.0, 8.19.0, 8.18.0, 8.17.0, 8.16.0, 8.15.0, 8.14.1, 8.14.0, 8.13.0, 8.12.1, 8.12.0, 8.11.1, 8.11.0, 8.10.1, 8.10.0, 8.9.1, 8.9.0, 8.8.0, 8.7.1, 8.7.0, 8.6.0, 8.5.0, 8.4.0, 8.3.0, 8.2.1, 8.2.0, 8.1.2, 8.1.1, 8.1.0, 8.0.1, 8.0.0, 7.88.1, 7.88.0, 7.87.0, 7.86.0, 7.85.0, 7.84.0, 7.83.1, 7.83.0, 7.82.0, 7.81.0, 7.80.0, 7.79.1, 7.79.0, 7.78.0, 7.77.0, 7.76.1, 7.76.0, 7.75.0, 7.74.0, 7.73.0, 7.72.0, 7.71.1, 7.71.0, 7.70.0, 7.69.1, 7.69.0, 7.68.0, 7.67.0, 7.66.0, 7.65.3, 7.65.2, 7.65.1, 7.65.0, 7.64.1, 7.64.0, 7.63.0, 7.62.0, 7.61.1, 7.61.0, 7.60.0, 7.59.0, 7.58.0, 7.57.0, 7.56.1, 7.56.0, 7.55.1, 7.55.0, 7.54.1, 7.54.0, 7.53.1, 7.53.0, 7.52.1, 7.52.0, 7.51.0, 7.50.3, 7.50.2, 7.50.1, 7.50.0, 7.49.1, 7.49.0, 7.48.0, 7.47.1, 7.47.0, 7.46.0 · 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 ↗
  7. ENISA EUVD mappingEUVD-2026-72153 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-72153"}
    ENISA EUVD ↗
  8. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: hackerone.com/3972385; added patch: curl.se/CVE-2026-82209.html; 2 further additions.
    Before
    no authoritative guidance recorded
    After
    mitigation: hackerone.com/3972385 · patch: curl.se/CVE-2026-82209.html · remediation: curl.se/CVE-2026-82209.html · 1 more references
    curl.se ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    8.21.0 ≤ 8.21.0; 8.20.0 ≤ 8.20.0; 8.19.0 ≤ 8.19.0; 8.18.0 ≤ 8.18.0; 8.17.0 ≤ 8.17.0; 8.16.0 ≤ 8.16.0; 8.15.0 ≤ 8.15.0; 8.14.1 ≤ 8.14.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    curl: 8.21.0 ≤ 8.21.0, 8.20.0 ≤ 8.20.0, 8.19.0 ≤ 8.19.0, 8.18.0 ≤ 8.18.0, 8.17.0 ≤ 8.17.0, 8.16.0 ≤ 8.16.0, 8.15.0 ≤ 8.15.0, 8.14.1 ≤ 8.14.1, 8.14.0 ≤ 8.14.0, 8.13.0 ≤ 8.13.0, 8.12.1 ≤ 8.12.1, 8.12.0 ≤ 8.12.0, 8.11.1 ≤ 8.11.1, 8.11.0 ≤ 8.11.0, 8.10.1 ≤ 8.10.1, 8.10.0 ≤ 8.10.0, 8.9.1 ≤ 8.9.1, 8.9.0 ≤ 8.9.0, 8.8.0 ≤ 8.8.0, 8.7.1 ≤ 8.7.1, 8.7.0 ≤ 8.7.0, 8.6.0 ≤ 8.6.0, 8.5.0 ≤ 8.5.0, 8.4.0 ≤ 8.4.0, 8.3.0 ≤ 8.3.0, 8.2.1 ≤ 8.2.1, 8.2.0 ≤ 8.2.0, 8.1.2 ≤ 8.1.2, 8.1.1 ≤ 8.1.1, 8.1.0 ≤ 8.1.0, 8.0.1 ≤ 8.0.1, 8.0.0 ≤ 8.0.0, 7.88.1 ≤ 7.88.1, 7.88.0 ≤ 7.88.0, 7.87.0 ≤ 7.87.0, 7.86.0 ≤ 7.86.0, 7.85.0 ≤ 7.85.0, 7.84.0 ≤ 7.84.0, 7.83.1 ≤ 7.83.1, 7.83.0 ≤ 7.83.0, 7.82.0 ≤ 7.82.0, 7.81.0 ≤ 7.81.0, 7.80.0 ≤ 7.80.0, 7.79.1 ≤ 7.79.1, 7.79.0 ≤ 7.79.0, 7.78.0 ≤ 7.78.0, 7.77.0 ≤ 7.77.0, 7.76.1 ≤ 7.76.1, 7.76.0 ≤ 7.76.0, 7.75.0 ≤ 7.75.0, 7.74.0 ≤ 7.74.0, 7.73.0 ≤ 7.73.0, 7.72.0 ≤ 7.72.0, 7.71.1 ≤ 7.71.1, 7.71.0 ≤ 7.71.0, 7.70.0 ≤ 7.70.0, 7.69.1 ≤ 7.69.1, 7.69.0 ≤ 7.69.0, 7.68.0 ≤ 7.68.0, 7.67.0 ≤ 7.67.0, 7.66.0 ≤ 7.66.0, 7.65.3 ≤ 7.65.3, 7.65.2 ≤ 7.65.2, 7.65.1 ≤ 7.65.1, 7.65.0 ≤ 7.65.0, 7.64.1 ≤ 7.64.1, 7.64.0 ≤ 7.64.0, 7.63.0 ≤ 7.63.0, 7.62.0 ≤ 7.62.0, 7.61.1 ≤ 7.61.1, 7.61.0 ≤ 7.61.0, 7.60.0 ≤ 7.60.0, 7.59.0 ≤ 7.59.0, 7.58.0 ≤ 7.58.0, 7.57.0 ≤ 7.57.0, 7.56.1 ≤ 7.56.1, 7.56.0 ≤ 7.56.0, 7.55.1 ≤ 7.55.1, 7.55.0 ≤ 7.55.0, 7.54.1 ≤ 7.54.1, 7.54.0 ≤ 7.54.0, 7.53.1 ≤ 7.53.1, 7.53.0 ≤ 7.53.0, 7.52.1 ≤ 7.52.1, 7.52.0 ≤ 7.52.0, 7.51.0 ≤ 7.51.0, 7.50.3 ≤ 7.50.3, 7.50.2 ≤ 7.50.2, 7.50.1 ≤ 7.50.1, 7.50.0 ≤ 7.50.0, 7.49.1 ≤ 7.49.1, 7.49.0 ≤ 7.49.0, 7.48.0 ≤ 7.48.0, 7.47.1 ≤ 7.47.1, 7.47.0 ≤ 7.47.0, 7.46.0 ≤ 7.46.0 · 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 ↗
  10. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    curl.se ↗
  11. Public exploit evidencePublic exploit evidence changed from Public exploit reference to Public exploit reference.
    Before
    Public exploit reference
    After
    Public exploit reference
    hackerone.com ↗
  12. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    CVE.org ↗
  13. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    CISA ADP ↗
  14. CVSS scoreCVSS score changed from not recorded to 8.2 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N).
    Before
    not recorded
    After
    8.2 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N)
    CISA ADP ↗
  15. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-72153↗Red Hat Product Security security advisory↗CISA Vulnrichment SSVC evidence↗CVE authority or vendor reference↗Patch or update reference↗Public exploit 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-2026-82209 · cve.blacktree.nl