{"id":"CVE-2026-29002","summary":"CouchCMS Privilege Escalation via f_k_levels_list Parameter","details":"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.","modified":"2026-07-15T02:18:33.422692974Z","published":"2026-04-10T15:11:43.411Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29002.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"last_affected":"2.4.0"}]},{"extracted_events":[{"last_affected":"2.4.0"}],"source":"CPE_FIELD"}]},"references":[{"type":"WEB","url":"https://www.couchcms.com/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29002.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29002"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/couchcms-privilege-escalation-via-f-k-levels-list-parameter"},{"type":"PACKAGE","url":"https://github.com/CouchCMS/CouchCMS"},{"type":"EVIDENCE","url":"https://gist.github.com/thepiyushkumarshukla/477e2d2bbbe8cc3ec0d640c50f0cf9e1"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/couchcms/couchcms","events":[{"introduced":"0"},{"last_affected":"cfa2502b1a0e9c911fe2bc501cafd9ad8590c7ed"}],"database_specific":{"cpe":"cpe:2.3:a:couchcms:couchcms:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"2.4"}],"source":"CPE_RANGE"}}],"versions":["v2.4","v2.3","v2.2.1","v2.2","v2.1","v2.0","v1.4.7","v1.4.5","v1.4.5RC2","v1.4.5RC1","v1.4","v1.3.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29002.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}