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Full vulnerability report · 2026
CVE-2026-6653High confidence

libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling

GNOME · libxml2

7.0HighCVSS 4.0
Recommended action
Within 7 days

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

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state
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.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelibxml2Vendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.2.9.14+dfsg-1.3ubuntu3.8Canonical record ↗Source updated 9 Sept 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-2026-6653 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitylibxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free
6 known affected

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

  • libxml2 as a component of Red Hat Enterprise Linux 8
  • libxml2-devel as a component of Red Hat Enterprise Linux 8
  • libxml2.src as a component of Red Hat Enterprise Linux 8
  • python3-libxml2 as a component of Red Hat Enterprise Linux 8
  • 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
Summary
A flaw was found in libxml2. A remote attacker can exploit a use-after-free vulnerability in the `xmlParseInternalSubset` function by providing maliciously crafted XML input. This improper handling of entity resolution can lead to a denial-of-service (DoS), making the affected system or application unavailable.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2026-38232

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

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

Patch available
01

What, why and how

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

What

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

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

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

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 → Use After Free → 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
High: exploitation depends on specific conditions
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416 ↗

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCHighVulnerable-system confidentiality: A successful attack can cause a major loss.VILowVulnerable-system integrity: A successful attack can cause a limited loss.VALowVulnerable-system availability: A successful attack can cause a limited loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: 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-416Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-3167Hitachi Energy RTU500: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Hitachi Energy RTU500 ausnutzen um Denial-of-Service-Zustände durch Anwendungsabstürze zu verursachen, Cookies oder Authentifizierungsinformationen an unbeabsichtigte Gegenstellen offenzulegen oder vorgesehene Authentifizierungskonfigurationen zu umgehen.

Official advisory
BSI · German · WID-SEC-W-2026-3038Meinberg LANTIME: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.

Official advisory
BSI · German · WID-SEC-W-2026-2037libxml2: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuführen.

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.
Patch available
Affected
libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; 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
Fixed
libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 17 more
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
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 22 Jun 2026 · Last source change 22 Jun 2026, 15:51 UTC · CWE-416 · Use After Free

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2026-38232
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

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
    libxml2 as a component of Red Hat Enterprise Linux 6; libxml2-devel as a component of Red Hat Enterprise Linux 6; libxml2-python as a component of Red Hat Enterprise Linux 6; libxml2-static as a component of Red Hat Enterprise Linux 6; libxml2.src as a component of Red Hat Enterprise Linux 6; libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; 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 · Fixed: libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 15 more
    After
    libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; 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 · Fixed: libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 17 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    libxml2 as a component of Red Hat Enterprise Linux 6; libxml2-devel as a component of Red Hat Enterprise Linux 6; libxml2-python as a component of Red Hat Enterprise Linux 6; libxml2-static as a component of Red Hat Enterprise Linux 6; libxml2.src as a component of Red Hat Enterprise Linux 6; libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 15 more
    After
    libxml2 as a component of Red Hat Enterprise Linux 6; libxml2-devel as a component of Red Hat Enterprise Linux 6; libxml2-python as a component of Red Hat Enterprise Linux 6; libxml2-static as a component of Red Hat Enterprise Linux 6; libxml2.src as a component of Red Hat Enterprise Linux 6; libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; 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 · Fixed: libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 15 more
    Red Hat Product Security ↗
  3. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    Red Hat Product Security ↗
  4. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    libxml2 as a component of Red Hat Enterprise Linux 6; libxml2-devel as a component of Red Hat Enterprise Linux 6; libxml2-python as a component of Red Hat Enterprise Linux 6; libxml2-static as a component of Red Hat Enterprise Linux 6; libxml2.src as a component of Red Hat Enterprise Linux 6; libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; libxml2 as a component of Red Hat Enterprise Linux 9; libxml2-devel as a component of Red Hat Enterprise Linux 9; libxml2.src as a component of Red Hat Enterprise Linux 9; python3-libxml2 as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
    After
    libxml2 as a component of Red Hat Enterprise Linux 6; libxml2-devel as a component of Red Hat Enterprise Linux 6; libxml2-python as a component of Red Hat Enterprise Linux 6; libxml2-static as a component of Red Hat Enterprise Linux 6; libxml2.src as a component of Red Hat Enterprise Linux 6; libxml2 as a component of Red Hat Enterprise Linux 8; libxml2-devel as a component of Red Hat Enterprise Linux 8; libxml2.src as a component of Red Hat Enterprise Linux 8; python3-libxml2 as a component of Red Hat Enterprise Linux 8; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-debugsource-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-devel-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); python3-libxml2-debuginfo-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libxml2-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-0:2.9.13-14.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); libxml2-debuginfo-0:2.9.13-14.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); and 15 more
    Red Hat Product Security ↗
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-2026-38232↗Vendor CSAF · Red Hat Product Security↗Public exploit 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-2026-6653 · cve.blacktree.nl