What is GHSA-xxrc-g5c2-523g?

GHSA-xxrc-g5c2-523g is a security advisory published by GitHub Security Advisories with Critical severity. Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154.

Which CVE IDs does GHSA-xxrc-g5c2-523g cover?

GHSA-xxrc-g5c2-523g covers the following CVE IDs: CVE-2026-75874. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-xxrc-g5c2-523g?

GHSA-xxrc-g5c2-523g has a CVSS v3 base score of 10.0, published by GitHub Security Advisories.

GHSA-xxrc-g5c2-523gCriticalCVSS 10.0

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154.

Vendor

GitHub Security Advisories

Published

August 18, 2026

Last Modified

August 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-75874 →

📋 Description

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-75874
https://bugzilla.mozilla.org/show_bug.cgi?id=2039972
https://www.mozilla.org/security/advisories/mfsa2026-74
https://www.mozilla.org/security/advisories/mfsa2026-78
https://github.com/advisories/GHSA-xxrc-g5c2-523g