CVE-2026-12456

CVSS 4.2 MEDIUMEPSS 0.1%CWE-20

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.2EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

17 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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)

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected products

Google · Chrome

References

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html https://issues.chromium.org/issues/517124587