What is GHSA-v3cw-2f3g-f38x?

GHSA-v3cw-2f3g-f38x 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_GetBuffer, XML_Parse,...

Which CVE IDs does GHSA-v3cw-2f3g-f38x cover?

GHSA-v3cw-2f3g-f38x covers the following CVE IDs: CVE-2026-50219. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-v3cw-2f3g-f38x?

GHSA-v3cw-2f3g-f38x has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

GHSA-v3cw-2f3g-f38xMediumCVSS 4.9

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse,...

Vendor

GitHub Security Advisories

Published

June 4, 2026

Last Modified

June 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-50219 →

📋 Description

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-50219
https://github.com/libexpat/libexpat/pull/1246
https://github.com/advisories/GHSA-v3cw-2f3g-f38x