CVE-2026-29002 CouchCMS Privilege Escalation via f_k_levels_list Parameter
Authenticated Admin users can escalate privileges to SuperAdmin by tampering with the f_k_levels_list parameter during user creation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-29002?
CVE-2026-29002 is a high-severity vulnerability in CouchCMS, published on 10 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-29002?
It affects 1 product.
Products include Couchcms Couchcms.
How do I fix CVE-2026-29002?
No fix has been published for CVE-2026-29002 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-29002 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29002 exists.
Other vulnerabilities in CouchCMS
Sources
Also known as GHSA-6g6q-gcm9-395j.