What is GHSA-9rrq-xqwp-wx9r?

GHSA-9rrq-xqwp-wx9r is a security advisory published by GitHub Security Advisories with High severity. Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153.

Which CVE IDs does GHSA-9rrq-xqwp-wx9r cover?

GHSA-9rrq-xqwp-wx9r covers the following CVE IDs: CVE-2026-16399. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9rrq-xqwp-wx9r?

GHSA-9rrq-xqwp-wx9r has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-9rrq-xqwp-wx9rHighCVSS 7.5

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153.

Vendor

GitHub Security Advisories

Published

July 21, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-16399 →

📋 Description

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-16399
https://bugzilla.mozilla.org/show_bug.cgi?id=2049981
https://www.mozilla.org/security/advisories/mfsa2026-68
https://github.com/advisories/GHSA-9rrq-xqwp-wx9r