What is GHSA-fcfr-j6j5-c3p5?

GHSA-fcfr-j6j5-c3p5 is a security advisory published by GitHub Security Advisories with High severity. Site isolation issue in the DOM: Service Workers component. This vulnerability was fixed in...

Which CVE IDs does GHSA-fcfr-j6j5-c3p5 cover?

GHSA-fcfr-j6j5-c3p5 covers the following CVE IDs: CVE-2026-117959. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fcfr-j6j5-c3p5?

GHSA-fcfr-j6j5-c3p5 has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-fcfr-j6j5-c3p5HighCVSS 8.1

Site isolation issue in the DOM: Service Workers component. This vulnerability was fixed in...

Vendor

GitHub Security Advisories

Published

October 27, 2026

Last Modified

November 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-117959 →

📋 Description

Site isolation issue in the DOM: Service Workers component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-117959
https://bugzilla.mozilla.org/show_bug.cgi?id=2067292
https://www.mozilla.org/security/advisories/mfsa2026-118
https://www.mozilla.org/security/advisories/mfsa2026-120
https://www.mozilla.org/security/advisories/mfsa2026-121
https://www.mozilla.org/security/advisories/mfsa2026-122
https://github.com/advisories/GHSA-fcfr-j6j5-c3p5