CVE-2026-12457: Google Chrome

Medium severity, CVSS 4.2. EPSS: 0.1% chance of exploitation in the next 30 days.

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

Affected products

• Google Chrome: before 149.0.7827.155 (fixed in 149.0.7827.155)

Published 2026-06-17. Last modified 2026-06-17.