CVE-2025-12863: Libxml2: namespace use-after-free in xmlsettreedoc() function of libxml2

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2025-Nov

Released

2025-11-11

Last Updated

2026-01-20

Affected Products (3)

Open Source Software

• cbl2 libxml2 2.10.4-9 on CBL Mariner 2.0
• azl3 libxml2 2.11.5-7 on Azure Linux 3.0

Other

• 20825-17084

Revision History

• 2025-11-11: Information published.
• 2026-01-20: Information published.