Security advisory

{
  "id": "bff13e1afabbb655d17f73ba0c2fbfcb9f25ef398c8811240fd1bf1a3f14a44b",
  "url": "https://osv.dev/vulnerability/CVE-2020-16154",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-16154",
    "summary": "The App::cpanminus package 1.7044 for Perl allows Signature Verification Bypass.",
    "evidence": "osv:CVE-2020-16154",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-16154",
      "aliases": [
        "CVE-2020-16154"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/miyagawa/cpanminus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6f2093061a6b7db59aaf48882344e2bac73e182a"
                },
                {
                  "last_affected": "6f2093061a6b7db59aaf48882344e2bac73e182a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:app\\:\\:cpanminus_project:app\\:\\:cpanminus:1.7044:*:*:*:*:perl:*:*",
                    "range": [
                      {
                        "introduced": "1.7044"
                      },
                      {
                        "last_affected": "1.7044"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.7044"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-16154.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:05.118726045Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DENFY4CRTIZL5WYYUYUM4VKCJNXO4QIW/",
        "https://metacpan.org/pod/App::cpanminus",
        "https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "35"
                  },
                  {
                    "last_affected": "35"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-16154",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440679,
  "published_at": "2021-12-13T17:15:08.103+00:00"
}