What is GHSA-j8jw-3hwp-9q2f?

GHSA-j8jw-3hwp-9q2f is a security advisory published by GitHub Security Advisories with Critical severity. Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This...

Which CVE IDs does GHSA-j8jw-3hwp-9q2f cover?

GHSA-j8jw-3hwp-9q2f covers the following CVE IDs: CVE-2026-92048. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-j8jw-3hwp-9q2f?

GHSA-j8jw-3hwp-9q2f has a CVSS v3 base score of 9.0, published by GitHub Security Advisories.

GHSA-j8jw-3hwp-9q2fCriticalCVSS 9.0

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This...

Vendor

GitHub Security Advisories

Published

September 15, 2026

Last Modified

September 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-92048 →

📋 Description

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-92048
https://bugzilla.mozilla.org/show_bug.cgi?id=2061235
https://www.mozilla.org/security/advisories/mfsa2026-90
https://www.mozilla.org/security/advisories/mfsa2026-93
https://www.mozilla.org/security/advisories/mfsa2026-94
https://www.mozilla.org/security/advisories/mfsa2026-96
https://github.com/advisories/GHSA-j8jw-3hwp-9q2f