Vulnerability record

CVE-2026-6653

Severity: HighExploitation: No known exploitation

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdate

    CVE-2026-6653 scored CVSS 7.0

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdate

    Patch released for CVE-2026-6653

    An official fix is now available.

    Basis: NVD patch reference

Coverage

References