CVE-2026-6732

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (5)

Core 5
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-6732
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2461300
https://bugzilla.redhat.com/show_bug.cgi?id=2461300
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:11503
https://access.redhat.com/errata/RHSA-2026:11503

Scores

CVSS v3 6.5
EPSS 0.0063
EPSS Percentile 45.3%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-843
Status published
Products (19)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat Hardened Images
Red Hat/Red Hat Hardened Images 2.15.3-0.1.hum1
Red Hat/Red Hat JBoss Core Services
Red Hat/Red Hat OpenShift Container Platform 4
redhat/enterprise_linux 6.0
... and 9 more
Published Apr 23, 2026
Tracked Since Apr 24, 2026