{
  "canonical_id": "adminer--CVE-2026-25892",
  "system_id": "adminer",
  "display_name": "Adminer",
  "category": "platforms",
  "advisory_mode": "core",
  "title": "CVE-2026-25892",
  "summary": "Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.",
  "published_at": "2026-02-09T22:16:04.023",
  "updated_at": "2026-02-20T20:24:32.147",
  "severity": "high",
  "cvss_score": 7.5,
  "exploit_status": "unknown",
  "source_confidence": "official",
  "official_source_url": "https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3",
  "secondary_source_urls": [
    "https://github.com/vrana/adminer/releases/tag/v5.4.2",
    "https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh"
  ],
  "aliases": [
    "CVE-2026-25892"
  ],
  "cve_ids": [
    "CVE-2026-25892"
  ],
  "ghsa_ids": [],
  "osv_ids": [],
  "affected_versions": [],
  "fixed_versions": [],
  "package_name": null,
  "render_markdown": false,
  "case_path": null,
  "secure_code_topics": [
    "xss-output-encoding",
    "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 Adminer"
    ],
    "source_kinds": [
      "nvd-search"
    ],
    "candidate_count": 1
  }
}