CVE-2026-29002: Couchcms

High severity, CVSS 7.2. EPSS: 0.7% chance of exploitation in the next 30 days.

CouchCMS contains a privilege escalation vulnerability that allows authenticated Admin-level users to create SuperAdmin accounts by tampering with the f_k_levels_list parameter in user creation requests. Attackers can modify the parameter value from 4 to 10 in the HTTP request body to bypass authorization validation and gain full application control, circumventing restrictions on SuperAdmin account creation and privilege assignment.

Affected products

• Couchcms Couchcms: up to and including 2.4

Published 2026-04-10. Last modified 2026-07-14.