CVE-2026-6732
libxml2: libxml2: Denial of Service via crafted XSD-validated document
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 16, 2026
Updated · November 2, 2026
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.
Statement
This issue was introduced in libxml2 version 2.13.0 and therefore did not affected the versions of libxml2 as shipped in Red Hat Enterprise Linux 10 and earlier.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-843 · Access of Resource Using Incompatible Type