CVE-2026-29002
CouchCMS Privilege Escalation via f_k_levels_list Parameter
CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | couchcms |
| Product | couchcms |
| Published | Apr 10, 2026 |
| Last Updated | Apr 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
CouchCMS / CouchCMS
0 ≤ 2.4.0
References
Credits
Piyush Kumar Shukla