What is GHSA-wh9f-q55j-mp9r?

GHSA-wh9f-q55j-mp9r is a security advisory published by GitHub Security Advisories with Critical severity. Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in...

Which CVE IDs does GHSA-wh9f-q55j-mp9r cover?

GHSA-wh9f-q55j-mp9r covers the following CVE IDs: CVE-2026-16379. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wh9f-q55j-mp9r?

GHSA-wh9f-q55j-mp9r has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-wh9f-q55j-mp9rCriticalCVSS 9.8

Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in...

Vendor

GitHub Security Advisories

Published

July 21, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-16379 →

📋 Description

Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-16379
https://bugzilla.mozilla.org/show_bug.cgi?id=2039452
https://www.mozilla.org/security/advisories/mfsa2026-68
https://www.mozilla.org/security/advisories/mfsa2026-70
https://github.com/advisories/GHSA-wh9f-q55j-mp9r