Security advisory

{
  "id": "f021981d7fe54c4826750bd3e113be099a22b5759c972b5b0fefe6b16456a4ae",
  "url": "https://osv.dev/vulnerability/CVE-2021-4171",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-4171",
    "summary": "calibre-web is vulnerable to Business Logic Errors",
    "evidence": "osv:CVE-2021-4171",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-4171",
      "aliases": [
        "CVE-2021-4171",
        "GHSA-xp7p-3gx7-j6wx",
        "PYSEC-2026-307"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/janeczku/calibre-web",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b564a97cdfc22c0e31e0ae18c6ed2b4320b40e50"
                },
                {
                  "fixed": "3e0d8763c377d2146462811e3e4ccf13f0d312ce"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.6.15"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3e0d8763c377d2146462811e3e4ccf13f0d312ce"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.6.14",
            "0.6.13",
            "0.6.12",
            "0.6.11",
            "0.6.10",
            "0.6.9",
            "0.6.8",
            "0.6.7",
            "0.6.6",
            "0.6.5",
            "0.6.3",
            "0.6.2",
            "0.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4171.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:58.967825947Z",
      "provider": "osv",
      "references": [
        "https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce",
        "https://huntr.dev/bounties/1117f439-133c-4563-afb2-6cd80607bd5c"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-4171",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386625,
  "published_at": "2022-01-17T10:15:07.857+00:00"
}