{
  "cveId": "CVE-2026-16434",
  "url": "https://patchblox.com/security/cve/CVE-2026-16434",
  "summary": "CVE-2026-16434 is fixed in adminer on 1 platform by DEBIAN-CVE-2026-16434 (version 6.0.0-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "adminer: Adminer 4.6.0 through 5.5.0 (fixed in 5.5.1) contains an incomplete fix for a prior X-Forwarded-Prefix vulnerability...",
  "description": "Adminer 4.6.0 through 5.5.0 (fixed in 5.5.1) contains an incomplete fix for a prior X-Forwarded-Prefix vulnerability (GHSA-8478-xrj3-h9c2). The validation guard (bootstrap.inc.php) only rejects prefixes matching ^/[^/], blocking //evil.com but allowing values such as /\\evil.com whose second character is a backslash. Because browsers normalize backslash to forward slash, a network-path reference survives into REQUEST_URI and reaches cookie_path(), affecting the Set-Cookie Path attribute. Exploitation requires that clients can set the X-Forwarded-Prefix header (a misconfigured or absent reverse proxy). Impact is limited to anomalous cookie-path scoping.",
  "published": "2026-08-25T02:16:40Z",
  "severity": "",
  "epss": 0.00389,
  "epssPercentile": 0.33289,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "adminer",
      "release": "Debian 14",
      "fixedVersion": "6.0.0-1",
      "fix": "DEBIAN-CVE-2026-16434",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-16434",
      "released": "2026-08-27T00:27:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}