What is GHSA-hv42-745h-67mr?

GHSA-hv42-745h-67mr is a security advisory published by GitHub Security Advisories with Medium severity. Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an...

Which CVE IDs does GHSA-hv42-745h-67mr cover?

GHSA-hv42-745h-67mr covers the following CVE IDs: CVE-2026-12456. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hv42-745h-67mr?

GHSA-hv42-745h-67mr has a CVSS v3 base score of 4.2, published by GitHub Security Advisories.

GHSA-hv42-745h-67mrMediumCVSS 4.2

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an...

Vendor

GitHub Security Advisories

Published

June 17, 2026

Last Modified

June 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-12456 →

📋 Description

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-12456
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html
https://issues.chromium.org/issues/517124587
https://github.com/advisories/GHSA-hv42-745h-67mr