What is GHSA-rm3p-8c93-r9fw?

GHSA-rm3p-8c93-r9fw is a security advisory published by GitHub Security Advisories with High severity. Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was...

Which CVE IDs does GHSA-rm3p-8c93-r9fw cover?

GHSA-rm3p-8c93-r9fw covers the following CVE IDs: CVE-2026-117928. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-rm3p-8c93-r9fw?

GHSA-rm3p-8c93-r9fw has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-rm3p-8c93-r9fwHighCVSS 8.1

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was...

Vendor

GitHub Security Advisories

Published

October 27, 2026

Last Modified

November 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-117928 →

📋 Description

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-117928
https://bugzilla.mozilla.org/show_bug.cgi?id=2081280
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-rm3p-8c93-r9fw