What is GHSA-vfgp-2986-rm7g?

GHSA-vfgp-2986-rm7g is a security advisory published by GitHub Security Advisories with Medium severity. libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a...

Which CVE IDs does GHSA-vfgp-2986-rm7g cover?

GHSA-vfgp-2986-rm7g covers the following CVE IDs: CVE-2026-76957. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vfgp-2986-rm7g?

GHSA-vfgp-2986-rm7g has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

GHSA-vfgp-2986-rm7gMediumCVSS 4.9

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a...

Vendor

GitHub Security Advisories

Published

August 20, 2026

Last Modified

August 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-76957 →

📋 Description

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-76957
https://github.com/libexpat/libexpat/pull/1322
https://github.com/libexpat/libexpat/pull/1329
https://github.com/advisories/GHSA-vfgp-2986-rm7g