What is GHSA-499q-6rmh-w6p7?

GHSA-499q-6rmh-w6p7 is a security advisory published by GitHub Security Advisories with Medium severity. In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of...

Which CVE IDs does GHSA-499q-6rmh-w6p7 cover?

GHSA-499q-6rmh-w6p7 covers the following CVE IDs: CVE-2026-86142. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-499q-6rmh-w6p7?

GHSA-499q-6rmh-w6p7 has a CVSS v3 base score of 6.9, published by GitHub Security Advisories.

GHSA-499q-6rmh-w6p7MediumCVSS 6.9

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of...

Vendor

GitHub Security Advisories

Published

September 5, 2026

Last Modified

September 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-86142 →

📋 Description

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-86142
https://github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58
https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113
https://github.com/advisories/GHSA-499q-6rmh-w6p7