{
  "canonical_id": "apache-httpd--CVE-2021-40438",
  "system_id": "apache-httpd",
  "display_name": "Apache HTTP Server",
  "category": "servers",
  "advisory_mode": "server",
  "title": "Apache HTTP Server-Side Request Forgery (SSRF)",
  "summary": "A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.",
  "published_at": "2021-12-01",
  "updated_at": "2021-12-15",
  "severity": "critical",
  "cvss_score": null,
  "exploit_status": "known_exploited",
  "source_confidence": "official",
  "official_source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json",
  "secondary_source_urls": [],
  "aliases": [
    "CVE-2021-40438"
  ],
  "cve_ids": [
    "CVE-2021-40438"
  ],
  "ghsa_ids": [],
  "osv_ids": [],
  "affected_versions": [],
  "fixed_versions": [],
  "package_name": null,
  "render_markdown": false,
  "case_path": null,
  "secure_code_topics": [
    "request-smuggling-boundary",
    "proxy-trust-boundary",
    "path-traversal-guard",
    "ssrf-url-validation"
  ],
  "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": "ssrf-generic",
  "artifact_mode": "official-image",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "CISA KEV Apache HTTPD"
    ],
    "source_kinds": [
      "kev-json"
    ],
    "candidate_count": 1
  }
}