{
  "cveId": "CVE-2021-21311",
  "url": "https://patchblox.com/security/cve/CVE-2021-21311",
  "summary": "CVE-2021-21311 is fixed in adminer on 1 platform, first by adminer 4.6.2-1ubuntu0.1~esm1, released May 19, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on September 29, 2025. Patch Radar priority: Patch now.",
  "title": "adminer: Adminer is an open-source database management in a single PHP file",
  "description": "Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. \u0060adminer.php\u0060) are affected. This is fixed in version 4.7.9.",
  "published": "2021-02-11T13:15:00Z",
  "severity": "Medium",
  "epss": 0.98464,
  "epssPercentile": 0.9992,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": false,
  "disclosed": false,
  "kev": {
    "added": "2025-09-29T00:00:00Z",
    "due": "2025-10-20T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable."
  },
  "fixes": [
    {
      "platform": "linux",
      "product": "adminer",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.6.2-1ubuntu0.1~esm1",
      "fix": "adminer 4.6.2-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-adminer-4.6.2-1ubuntu0.1-esm1",
      "released": "2021-05-19T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "adminer",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.7.6-1ubuntu0.1~esm1",
      "fix": "adminer 4.7.6-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-adminer-4.7.6-1ubuntu0.1-esm1",
      "released": "2021-05-19T15:15:00Z"
    }
  ],
  "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"
  }
}