CVE-2026-86141 PUBLISHED

Assigner: mitre
Reserved: 05.09.2026 Published: 05.09.2026 Updated: 05.09.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 2.9

Attack Vector	Local	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	xmlsoft
Product	libxml2
Versions	Default: unaffected affected from 0 to 2.15.4 (excl.)

References

https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4
https://github.com/GNOME/libxml2/commit/e89a8aae4c9b40cdafcf66b3f9e57c62db37bb55
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1107

Problem Types

CWE-252 Unchecked Return Value CWE