CVE-2025-12909: Google Chrome

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Insufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to leak cross-origin data via Devtools. (Chromium security severity: Low)

Affected products

• Google Chrome: before 140.0.7339.80 (fixed in 140.0.7339.80)

Published 2025-11-08. Last modified 2026-10-07.