What is GHSA-7rfq-9m5m-hmr4?

GHSA-7rfq-9m5m-hmr4 is a security advisory published by GitHub Security Advisories with Critical severity. Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 159 and...

Which CVE IDs does GHSA-7rfq-9m5m-hmr4 cover?

GHSA-7rfq-9m5m-hmr4 covers the following CVE IDs: CVE-2026-117861. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-7rfq-9m5m-hmr4?

GHSA-7rfq-9m5m-hmr4 has a CVSS v3 base score of 9.6, published by GitHub Security Advisories.

GHSA-7rfq-9m5m-hmr4CriticalCVSS 9.6

Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 159 and...

Vendor

GitHub Security Advisories

Published

October 27, 2026

Last Modified

November 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-117861 →

📋 Description

Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-117861
https://bugzilla.mozilla.org/show_bug.cgi?id=2053240
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-7rfq-9m5m-hmr4