CVE-2026-86141: xmlregexp in libxml2 before 2.15.4 has a NULL pointer dereference in xmlRegNewParserCtxt after a strdup failure, i.e., it does not calculate a string length after NULL checking.

Overview

Severity

Low (CVSS 2.9)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-06

Last Updated

2026-09-08

EPSS Score

0.12% (percentile: 1.8%)

Affected Products (1)

Other

• 21495-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-06: Information published.
• 2026-09-08: Information published.