{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.5.47"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ef4dc19c6"
            }
          ],
          "repo": "https://github.com/misp/misp",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "CIRCL",
    "cwe_ids": [
      "CWE-20",
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94379.json"
  },
  "details": "The login() function in MISP's UsersController.php contained insufficient HTTP method validation for several security-critical code paths. The original code used an allowlist approach, checking only for specific HTTP methods (POST and PUT) before enforcing bruteforce protection, email one-time-password (OTP) verification, and login-failure logging. Because the checks were not exhaustive, an unauthenticated attacker could issue login requests using other HTTP methods and bypass all three security controls simultaneously. Specifically: \n\n - the bruteforce blocklisting check and attempt counter were skipped, allowing unlimited credential-guessing attempts without being rate-limited or blocked\n -  the email OTP two-factor authentication step was skipped, defeating the second factor of authentication\n - login-failure events were neither logged nor counted, removing the audit trail and the mechanism that would normally trigger a blocklist entry.\n\n\n\n\nThe security impact is the effective disabling of brute-force protection and multi-factor authentication for any attacker who can craft an HTTP request with a non-POST/PUT method to the login endpoint, potentially leading to credential compromise and unauthorized access to the MISP instance.\n\n\n\n\n\nVersion affected: \u003c2.5.47",
  "id": "CVE-2026-94379",
  "modified": "2026-09-23T03:30:55.492443628Z",
  "published": "2026-09-21T12:35:26.533Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94379.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94379"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MISP/MISP/commit/ef4dc19c6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MISP/MISP"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MISP: HTTP Method Bypass of Login Security Controls (Bruteforce Protection and Email OTP)"
}