What is GHSA-9cw3-v4hh-fhf9?

GHSA-9cw3-v4hh-fhf9 is a security advisory published by GitHub Security Advisories with Critical severity. Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in...

Which CVE IDs does GHSA-9cw3-v4hh-fhf9 cover?

GHSA-9cw3-v4hh-fhf9 covers the following CVE IDs: CVE-2026-16349. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9cw3-v4hh-fhf9?

GHSA-9cw3-v4hh-fhf9 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-9cw3-v4hh-fhf9CriticalCVSS 9.8

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in...

Vendor

GitHub Security Advisories

Published

July 21, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-16349 →

📋 Description

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

🔗 References (6)

https://nvd.nist.gov/vuln/detail/CVE-2026-16349
https://bugzilla.mozilla.org/show_bug.cgi?id=2034682
https://www.mozilla.org/security/advisories/mfsa2026-68
https://www.mozilla.org/security/advisories/mfsa2026-69
https://www.mozilla.org/security/advisories/mfsa2026-70
https://github.com/advisories/GHSA-9cw3-v4hh-fhf9