CVE-2026-6732

Libxml2: libxml2: denial of service via crafted xsd-validated document

Published: Apr 23, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-843

6.5MEDIUM

Description

A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:AAttack Vector

Adjacent

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-843

Affected Products

Red Hat

commercial·USaka redhat

hardened imagesOn-prem

Operating Systems / linux-distro

jboss core servicesOn-prem

Operating Systems / linux-distro

openshift container platformOn-prem

Operating Systems / linux-distro

Red Hat Enterprise Linux 10On-premOS

Operating Systems / linux-distro

Red Hat Hardened ImagesOn-premOS

Operating Systems / linux-distro

Red Hat JBoss Core ServicesOn-premWeb App

Enterprise Software / itsm-monitoring

Red Hat OpenShift Container Platform 4SaaSSaaS Service

Cloud & SaaS / container-orchestration

ibm

commercial·USaka international business machines

viosOn-prem

Enterprise Software / itsm-monitoring

aixOS

Operating Systems / unix-bsd

xmlsoft

oss-projectaka libxml2, libxslt

libxml2LibraryLibrary

OSS Libraries / generic-library

and 5 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:11503

access.redhat.com

https://access.redhat.com/security/cve/CVE-2026-6732

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2461300

bugzilla.redhat.com

and 2 more references View all →

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