CVE-2026-85181: Dianping Cat

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

CAT uses Java String.hashCode as the sole integrity check for session cookies without server-side keying, allowing attackers to forge valid checksums offline. Attackers can set the x-forwarded-for header to bypass IP binding validation and create admin sessions with full configuration access.

Affected products

• Dianping Cat: up to and including 3.1.0

Published 2026-09-03. Last modified 2026-09-23.