Security advisory

{
  "id": "4654ae9068e4018857fe9f38b35971a0fad1885201d86e10b68fb30ea89dae20",
  "url": "https://osv.dev/vulnerability/CVE-2021-3325",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3325",
    "summary": "Monitorix 3.13.0 allows remote attackers to bypass Basic Authentication in a default installation (i.e., an installation without a hosts_deny option). This issue occurred because a new access-control feature was introduced without considering that some exiting installations became unsafe, upon an update to 3.13.0, unless the new feature was immediately configured.",
    "evidence": "osv:CVE-2021-3325",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-3325",
      "aliases": [
        "CVE-2021-3325"
      ],
      "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/mikaku/monitorix",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c0d8f8ddd4f88ba5b7cef00d5505b7f3f10b8941"
                },
                {
                  "last_affected": "c0d8f8ddd4f88ba5b7cef00d5505b7f3f10b8941"
                },
                {
                  "fixed": "d6816e20da1a98bcdc6372d9c36a093df5238f4a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:fibranet:monitorix:3.13.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.13.0"
                      },
                      {
                        "last_affected": "3.13.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d6816e20da1a98bcdc6372d9c36a093df5238f4a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.13.0",
            "v3.13.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3325.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:47.475344381Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67DDUU56LP76AJ2K7WJ733QPL2FHKKNG/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGG6WK44CYY6GEFRTCUEDANVNSX5NDH7/",
        "https://www.monitorix.org/news.html?n=20210127",
        "https://github.com/mikaku/Monitorix/issues/309",
        "https://github.com/mikaku/Monitorix/commit/d6816e20da1a98bcdc6372d9c36a093df5238f4a",
        "https://github.com/mikaku/Monitorix/compare/v3.13.0...v3.13.1"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "32"
                  },
                  {
                    "last_affected": "32"
                  },
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3325",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384636,
  "published_at": "2021-01-27T19:15:13.983+00:00"
}