CVE-2018-18351: Debian Linux

Medium severity, CVSS 6.5. EPSS: 2.6% chance of exploitation in the next 30 days.

Lack of proper validation of ancestor frames site when sending lax cookies in Navigation in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to bypass SameSite cookie policy via a crafted HTML page.

Affected products

• Debian Debian Linux: version 9.0 only
• Google Chrome: before 71.0.3578.80 (fixed in 71.0.3578.80)
• Red Hat Enterprise Linux Desktop: version 6.0 only
• Red Hat Enterprise Linux Server: version 6.0 only
• Red Hat Enterprise Linux Workstation: version 6.0 only

Published 2018-12-11. Last modified 2026-06-17.