What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-10 · updated 2026-07-14
• Weakness: CWE-639

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.

Affected products

• CouchCMS: through 2.4

References

• https://gist.github.com/thepiyushkumarshukla/477e2d2bbbe8cc3ec0d640c50f0cf9e1
• https://www.couchcms.com/
• https://www.vulncheck.com/advisories/couchcms-privilege-escalation-via-f-k-levels-list-parameter

Get alerted when CVE-2026-29002 or the next vulnerability affects your stack