CVE-2026-29002

CouchCMS Privilege Escalation via f_k_levels_list Parameter

Published Apr 10, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:couchcms:couchcms:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Couchcms
Couchcms couchcms
Vendors & Products Couchcms
Couchcms couchcms
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title CouchCMS Privilege Escalation via f_k_levels_list Parameter
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 14, 2026, 6:39 PM
Reserved
Mar 3, 2026, 4:42 PM
Status
Analyzed
Published
Apr 10, 2026, 4:16 PM
Modified
Jul 14, 2026, 7:16 PM