What is GHSA-h5j3-rr49-jmm6?

GHSA-h5j3-rr49-jmm6 is a security advisory published by GitHub Security Advisories with Medium severity. libexpat before 2.8.2 has an integer overflow in addBinding.

Which CVE IDs does GHSA-h5j3-rr49-jmm6 cover?

GHSA-h5j3-rr49-jmm6 covers the following CVE IDs: CVE-2026-56404. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h5j3-rr49-jmm6?

GHSA-h5j3-rr49-jmm6 has a CVSS v3 base score of 6.9, published by GitHub Security Advisories.

GHSA-h5j3-rr49-jmm6MediumCVSS 6.9

libexpat before 2.8.2 has an integer overflow in addBinding.

Vendor

GitHub Security Advisories

Published

June 21, 2026

Last Modified

June 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-56404 →

📋 Description

libexpat before 2.8.2 has an integer overflow in addBinding.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-56404
https://github.com/libexpat/libexpat/pull/1249
https://github.com/advisories/GHSA-h5j3-rr49-jmm6