What is GHSA-fchf-wvcc-qf9g?

GHSA-fchf-wvcc-qf9g is a security advisory published by GitHub Security Advisories with Medium severity. libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within...

Which CVE IDs does GHSA-fchf-wvcc-qf9g cover?

GHSA-fchf-wvcc-qf9g covers the following CVE IDs: CVE-2026-56131. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fchf-wvcc-qf9g?

GHSA-fchf-wvcc-qf9g has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

GHSA-fchf-wvcc-qf9gMediumCVSS 4.9

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within...

Vendor

GitHub Security Advisories

Published

June 19, 2026

Last Modified

June 19, 2026

🔗 CVE IDs covered (1)

CVE-2026-56131 →

📋 Description

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-56131
https://github.com/libexpat/libexpat/pull/1267
https://github.com/advisories/GHSA-fchf-wvcc-qf9g