CVE-2026-29002 HIGH

CVE-2026-29002: CouchCMS Privilege Escalation via f_k_levels_list Parameter

Vendor Couchcms
Product CouchCMS
Weakness CWE-639 · IDOR
Published April 10, 2026
Last update April 10, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 10, 2026 CVE published
April 10, 2026 Record updated