What is GHSA-88w5-4mq6-prvg?

GHSA-88w5-4mq6-prvg is a security advisory published by GitHub Security Advisories with Critical severity. Sandbox escape due to use-after-free in the IPC component. This vulnerability was fixed in...

Which CVE IDs does GHSA-88w5-4mq6-prvg cover?

GHSA-88w5-4mq6-prvg covers the following CVE IDs: CVE-2026-124903. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-88w5-4mq6-prvg?

GHSA-88w5-4mq6-prvg has a CVSS v3 base score of 9.6, published by GitHub Security Advisories.

GHSA-88w5-4mq6-prvgCriticalCVSS 9.6

Sandbox escape due to use-after-free in the IPC component. This vulnerability was fixed in...

Vendor

GitHub Security Advisories

Published

November 10, 2026

Last Modified

November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-124903 →

📋 Description

Sandbox escape due to use-after-free in the IPC component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, and Firefox ESR 153.7.

🔗 References (8)

https://nvd.nist.gov/vuln/detail/CVE-2026-124903
https://bugzilla.mozilla.org/show_bug.cgi?id=2084673
https://www.mozilla.org/security/advisories/mfsa2026-125
https://www.mozilla.org/security/advisories/mfsa2026-126
https://www.mozilla.org/security/advisories/mfsa2026-127
https://www.mozilla.org/security/advisories/mfsa2026-128
https://www.mozilla.org/security/advisories/mfsa2026-129
https://github.com/advisories/GHSA-88w5-4mq6-prvg