What is GHSA-fjc3-w5fg-m3j9?

GHSA-fjc3-w5fg-m3j9 is a security advisory published by GitHub Security Advisories with Critical severity. Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox...

Which CVE IDs does GHSA-fjc3-w5fg-m3j9 cover?

GHSA-fjc3-w5fg-m3j9 covers the following CVE IDs: CVE-2026-117982. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fjc3-w5fg-m3j9?

GHSA-fjc3-w5fg-m3j9 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-fjc3-w5fg-m3j9CriticalCVSS 9.8

Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox...

Vendor

GitHub Security Advisories

Published

October 27, 2026

Last Modified

November 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-117982 →

📋 Description

Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-117982
https://bugzilla.mozilla.org/show_bug.cgi?id=2078855
https://www.mozilla.org/security/advisories/mfsa2026-118
https://www.mozilla.org/security/advisories/mfsa2026-120
https://www.mozilla.org/security/advisories/mfsa2026-121
https://www.mozilla.org/security/advisories/mfsa2026-122
https://github.com/advisories/GHSA-fjc3-w5fg-m3j9