{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.1.1"
              },
              {
                "fixed": "2.9.1"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a9e64edaba0837bac051a432a06be1b401820cb6"
            },
            {
              "fixed": "cc71e01c909c9e7fa23ddc115981773ce1242b49"
            },
            {
              "fixed": "158823668e2e5c3114a69b34cf1c96cb41533c5f"
            },
            {
              "fixed": "45c15c72bf415015322512bc1f8069bdff240dd4"
            }
          ],
          "repo": "https://github.com/owen2345/camaleon-cms",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.9.2"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66748.json"
  },
  "details": "Camaleon CMS versions 2.1.1 through 2.9.1 contains an authenticated remote code execution vulnerability that allows users with custom_fields manage permission to execute arbitrary Ruby code by supplying a malicious expression through the select_eval custom field type. Attackers can store an attacker-controlled Ruby expression in the field options command parameter, which is evaluated via instance_eval within an ERB view whenever a post edit page is rendered, achieving server-side code execution with web server process privileges.",
  "id": "CVE-2026-66748",
  "modified": "2026-07-31T03:33:50.329648320Z",
  "published": "2026-07-28T15:19:52.609Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66748.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66748"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/camaleon-cms-authenticated-rce-via-select-eval-custom-field"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/owen2345/camaleon-cms/pull/1136"
    },
    {
      "type": "FIX",
      "url": "https://github.com/owen2345/camaleon-cms/commit/158823668e2e5c3114a69b34cf1c96cb41533c5f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/owen2345/camaleon-cms"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/theopaid/Camaleon-CMS---Authenticated-RCE-via-select_eval-Custom-Field"
    },
    {
      "type": "EVIDENCE",
      "url": "https://tpaidakis.com/writeups/camaleon-cms-rce-select-eval/"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Camaleon CMS 2.1.1 - 2.9.1 Authenticated RCE via select_eval Custom Field"
}