What is GHSA-4qpg-rxp6-fcj2?

GHSA-4qpg-rxp6-fcj2 is a security advisory published by GitHub Security Advisories with Critical severity. Sandbox escape due to use-after-free in the DOM: Service Workers component. This vulnerability...

Which CVE IDs does GHSA-4qpg-rxp6-fcj2 cover?

GHSA-4qpg-rxp6-fcj2 covers the following CVE IDs: CVE-2026-124900. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4qpg-rxp6-fcj2?

GHSA-4qpg-rxp6-fcj2 has a CVSS v3 base score of 9.6, published by GitHub Security Advisories.

GHSA-4qpg-rxp6-fcj2CriticalCVSS 9.6

Sandbox escape due to use-after-free in the DOM: Service Workers component. This vulnerability...

Vendor

GitHub Security Advisories

Published

November 10, 2026

Last Modified

November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-124900 →

📋 Description

Sandbox escape due to use-after-free in the DOM: Service Workers component. This vulnerability was fixed in Firefox 160.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-124900
https://bugzilla.mozilla.org/show_bug.cgi?id=2083116
https://www.mozilla.org/security/advisories/mfsa2026-125
https://www.mozilla.org/security/advisories/mfsa2026-128
https://github.com/advisories/GHSA-4qpg-rxp6-fcj2