CVE-2026-9891: Google Chrome

Critical severity, CVSS 9.0. EPSS: 0.3% chance of exploitation in the next 30 days.

Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)

Affected products

• Google Chrome: before 148.0.7778.216 (fixed in 148.0.7778.216); before 148.0.7778.215 (fixed in 148.0.7778.215)

Published 2026-05-28. Last modified 2026-07-21.