Type confusion in Libxml2 - CVE-2026-6732
Published: April 29, 2026
Vulnerability identifier: #VU128468
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-6732
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to crash the application.
The vulnerability exists due to a type confusion error when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. A remote attacker can supply a specially crafted XML document to the application and perform a denial of service attack.
Affected software
Libxml2
How to mitigate CVE-2026-6732
Install updates from vendor's website.
Libxml2 - update to 2.15.3