{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:couchcms:couchcms:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "cfa2502b1a0e9c911fe2bc501cafd9ad8590c7ed"
            }
          ],
          "repo": "https://github.com/couchcms/couchcms",
          "type": "GIT"
        }
      ]
    }
  ],
  "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": [
      {
        "extracted_events": [
          {
            "last_affected": "2.4.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "last_affected": "2.4.0"
          }
        ],
        "source": "CPE_FIELD"
      }
    ]
  },
  "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.",
  "id": "CVE-2026-29002",
  "modified": "2026-07-15T01:49:19.810657836Z",
  "published": "2026-04-10T15:11:43.411Z",
  "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"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CouchCMS Privilege Escalation via f_k_levels_list Parameter"
}