CVE-2026-6732

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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-26)

CWE

CWE-843

Published

2026-04-23

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• ibm:aix
• ibm:vios
• redhat:enterprise_linux
• redhat:hardened_images
• redhat:jboss_core_services
• redhat:openshift_container_platform
• xmlsoft:libxml2

References

• https://access.redhat.com/errata/RHSA-2026:11503
• https://access.redhat.com/security/cve/CVE-2026-6732
• https://bugzilla.redhat.com/show_bug.cgi?id=2461300
• https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097
• https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411

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