What is GHSA-v4gg-2cxp-fc23?

GHSA-v4gg-2cxp-fc23 is a security advisory published by GitHub Security Advisories with Medium severity. In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap...

Which CVE IDs does GHSA-v4gg-2cxp-fc23 cover?

GHSA-v4gg-2cxp-fc23 covers the following CVE IDs: CVE-2026-86138. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-v4gg-2cxp-fc23?

GHSA-v4gg-2cxp-fc23 has a CVSS v3 base score of 6.9, published by GitHub Security Advisories.

GHSA-v4gg-2cxp-fc23MediumCVSS 6.9

In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap...

Vendor

GitHub Security Advisories

Published

September 5, 2026

Last Modified

September 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-86138 →

📋 Description

In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-86138
https://github.com/GNOME/libxml2/commit/a4cba4b5b5a8c42e155ed42d2d2a44955465a2e4
https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4
https://github.com/advisories/GHSA-v4gg-2cxp-fc23