CVE-2026-12027: Google Chrome

Critical severity, CVSS 9.6. EPSS: 0.2% chance of exploitation in the next 30 days.

Inappropriate implementation in Headless in Google Chrome prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Affected products

• Google Chrome: before 149.0.7827.115 (fixed in 149.0.7827.115)

Published 2026-06-11. Last modified 2026-06-23.