Security advisory

{
  "id": "78239cc4bd38aaded76e37a331534db73f2a6e3a043528aa1ea2581d9d1c80ea",
  "url": "https://osv.dev/vulnerability/CVE-2021-42583",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-42583",
    "summary": "A Broken or Risky Cryptographic Algorithm exists in Max Mazurov Maddy before 0.5.2, which is an unnecessary risk that may result in the exposure of sensitive information.",
    "evidence": "osv:CVE-2021-42583",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-42583",
      "aliases": [
        "CVE-2021-42583",
        "GHSA-5r5w-h76p-m726",
        "GO-2022-0306"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/foxcpp/maddy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3ae07046c11ee3eba162a2b1a8a82e054a8227e4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:foxcpp:maddy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3ae07046c11ee3eba162a2b1a8a82e054a8227e4"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.5.2"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.5.1",
            "v0.5.0",
            "v0.4.4",
            "v0.4.3",
            "v0.4.2",
            "v0.4.1",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42583.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:01.798412186Z",
      "provider": "osv",
      "references": [
        "https://github.com/foxcpp/maddy/blob/df40dce1284cd0fd0a9e8e7894029553d653d0a5/internal/auth/shadow/verify.go",
        "https://github.com/foxcpp/maddy/releases/tag/v0.5.2"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-42583",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386723,
  "published_at": "2021-12-28T19:15:07.97+00:00"
}