{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.26.0"
              },
              {
                "fixed": "0.31.8.0"
              },
              {
                "introduced": "0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "fb60f5a96a76953c1c24740fc5d616c765d0aec6"
            },
            {
              "fixed": "44f10f8dcbdced7cf38221b764d674e3469563e9"
            }
          ],
          "repo": "https://github.com/ci4-cms-erp/ci4ms",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5hfv-c864-qcq9"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41891.json"
  },
  "details": "CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. From version 0.26.0 to before version 0.31.8.0, the auth filter has the deactivated/banned user check commented out. This issue has been patched in version 0.31.8.0.",
  "id": "CVE-2026-41891",
  "modified": "2026-08-07T11:31:01.016583569Z",
  "published": "2026-05-07T03:24:43.940Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.8.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41891.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-5hfv-c864-qcq9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41891"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CI4MS: Deactivated User Session Bypass (active=0)"
}