What is GHSA-99m4-2rv5-23fh?

GHSA-99m4-2rv5-23fh is a security advisory published by GitHub Security Advisories with Medium severity. Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152.

Which CVE IDs does GHSA-99m4-2rv5-23fh cover?

GHSA-99m4-2rv5-23fh covers the following CVE IDs: CVE-2026-12300. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-99m4-2rv5-23fh?

GHSA-99m4-2rv5-23fh has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-99m4-2rv5-23fhMediumCVSS 5.3

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152.

Vendor

GitHub Security Advisories

Published

June 16, 2026

Last Modified

June 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-12300 →

📋 Description

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-12300
https://bugzilla.mozilla.org/show_bug.cgi?id=1704114
https://www.mozilla.org/security/advisories/mfsa2026-57
https://www.mozilla.org/security/advisories/mfsa2026-60
https://github.com/advisories/GHSA-99m4-2rv5-23fh