What is GHSA-x37c-vm4v-4wvx?

GHSA-x37c-vm4v-4wvx is a security advisory published by GitHub Security Advisories with High severity. Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151.

Which CVE IDs does GHSA-x37c-vm4v-4wvx cover?

GHSA-x37c-vm4v-4wvx covers the following CVE IDs: CVE-2026-8964. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-x37c-vm4v-4wvx?

GHSA-x37c-vm4v-4wvx has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-x37c-vm4v-4wvxHighCVSS 7.5

Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151.

Vendor

GitHub Security Advisories

Published

May 19, 2026

Last Modified

May 19, 2026

🔗 CVE IDs covered (1)

CVE-2026-8964 →

📋 Description

Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-8964
https://bugzilla.mozilla.org/show_bug.cgi?id=2025170
https://www.mozilla.org/security/advisories/mfsa2026-46
https://www.mozilla.org/security/advisories/mfsa2026-50
https://github.com/advisories/GHSA-x37c-vm4v-4wvx