What is GHSA-m2mm-5w64-p8p7?

GHSA-m2mm-5w64-p8p7 is a security advisory published by GitHub Security Advisories with Medium severity. libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks...

Which CVE IDs does GHSA-m2mm-5w64-p8p7 cover?

GHSA-m2mm-5w64-p8p7 covers the following CVE IDs: CVE-2026-56412. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-m2mm-5w64-p8p7?

GHSA-m2mm-5w64-p8p7 has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

GHSA-m2mm-5w64-p8p7MediumCVSS 4.9

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks...

Vendor

GitHub Security Advisories

Published

June 21, 2026

Last Modified

June 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-56412 →

📋 Description

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-56412
https://github.com/libexpat/libexpat/pull/1278
https://github.com/advisories/GHSA-m2mm-5w64-p8p7