CVE-2026-12456

MEDIUM4.2

Inappropriate implementation in Extensions in Google Chrome prior to 149

Published Jun 17, 2026

Modified 5 days ago

Fix available

Details

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)

Affected Packages

Google Chrome

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1809) / Server 2019Windows 10 (1903)Windows 10 (1909)

Fixed in:

149.0.7827.155

References

WEB

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html

WEB

https://issues.chromium.org/issues/517124587

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-12456