Security advisory

{
  "id": "4fbee0040ebe49c6717be7ef813245918523e2fb42403121d6366efe52501956",
  "url": "https://osv.dev/vulnerability/CVE-2021-21311",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21311",
    "summary": "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. `adminer.php`) are affected. This is fixed in version 4.7.9.",
    "evidence": "osv:CVE-2021-21311",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-21311",
      "aliases": [
        "CVE-2021-21311",
        "GHSA-x5r2-hj5c-8jx6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/vrana/adminer",
              "type": "GIT",
              "events": [
                {
                  "introduced": "184273750aa4b255e54b30296f580ebca89a2d39"
                },
                {
                  "fixed": "93c7fb248ca008e3247eb3a43812e1096e7b262c"
                },
                {
                  "fixed": "ccd2374b0b12bd547417bf0dacdf153826c83351"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.7.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ccd2374b0b12bd547417bf0dacdf153826c83351"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.7.8",
            "v4.7.7",
            "v4.7.5",
            "v4.7.4",
            "v4.7.3",
            "v4.7.2",
            "v4.7.1",
            "v4.7.0",
            "v4.6.3",
            "v4.6.2",
            "v4.6.1",
            "v4.6.0",
            "v4.5.0",
            "v4.4.0",
            "v4.3.1",
            "v4.3.0",
            "v4.2.5",
            "v4.2.4",
            "v4.2.3",
            "v4.2.2",
            "v4.2.1",
            "v4.2.0",
            "v4.1.0",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21311.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:33.505547597Z",
      "provider": "osv",
      "references": [
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311",
        "https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html",
        "https://packagist.org/packages/vrana/adminer",
        "https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351",
        "https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6",
        "https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-21311",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384418,
  "published_at": "2021-02-11T21:15:13.82+00:00"
}