What is GHSA-ff33-vw52-c9p4?

GHSA-ff33-vw52-c9p4 is a security advisory published by GitHub Security Advisories with Critical severity. Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.

Which CVE IDs does GHSA-ff33-vw52-c9p4 cover?

GHSA-ff33-vw52-c9p4 covers the following CVE IDs: CVE-2026-16406. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-ff33-vw52-c9p4?

GHSA-ff33-vw52-c9p4 has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-ff33-vw52-c9p4CriticalCVSS 9.1

Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.

Vendor

GitHub Security Advisories

Published

July 21, 2026

Last Modified

July 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-16406 →

📋 Description

Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-16406
https://bugzilla.mozilla.org/show_bug.cgi?id=2040382
https://www.mozilla.org/security/advisories/mfsa2026-68
https://github.com/advisories/GHSA-ff33-vw52-c9p4