{
  "canonical_id": "rails--CVE-2009-2422",
  "system_id": "rails",
  "display_name": "Ruby on Rails",
  "category": "frameworks",
  "advisory_mode": "core",
  "title": "CVE-2009-2422",
  "summary": "The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.",
  "published_at": "2009-07-10T15:30:00.250",
  "updated_at": "2025-04-09T00:30:58.490",
  "severity": "critical",
  "cvss_score": 9.8,
  "exploit_status": "unknown",
  "source_confidence": "ecosystem-authority",
  "official_source_url": "http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html",
  "secondary_source_urls": [
    "http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s",
    "http://secunia.com/advisories/35702",
    "http://support.apple.com/kb/HT4077",
    "http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest",
    "http://www.securityfocus.com/bid/35579",
    "http://www.vupen.com/english/advisories/2009/1802",
    "https://exchange.xforce.ibmcloud.com/vulnerabilities/51528"
  ],
  "aliases": [
    "CVE-2009-2422"
  ],
  "cve_ids": [
    "CVE-2009-2422"
  ],
  "ghsa_ids": [],
  "osv_ids": [],
  "affected_versions": [],
  "fixed_versions": [],
  "package_name": null,
  "render_markdown": false,
  "case_path": null,
  "secure_code_topics": [
    "xss-output-encoding",
    "file-upload-validation",
    "authz-server-side-recheck"
  ],
  "status": "triage",
  "triage_reasons": [
    "missing affected/fixed version details"
  ],
  "verification_status": "triage-manual",
  "verification_mode": "synthetic",
  "last_verified_at": null,
  "last_run_id": null,
  "evidence_bundle": null,
  "historical_status": null,
  "latest_status": null,
  "browser_evidence": {
    "required": false,
    "present": false,
    "refs": []
  },
  "repro_profile_id": "xss-generic",
  "artifact_mode": "synthetic",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "NVD Ruby on Rails"
    ],
    "source_kinds": [
      "nvd-search"
    ],
    "candidate_count": 1
  }
}