Security advisory

{
  "id": "5f456e42c043789a4e781c289579559a3dc4fae58ed3a3a77e7093bbdc0cfb57",
  "url": "https://osv.dev/vulnerability/CVE-2020-12872",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-12872",
    "summary": "yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.",
    "evidence": "osv:CVE-2020-12872",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-12872",
      "aliases": [
        "CVE-2020-12872"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/erlyaws/yaws",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9ec143595747edee4b500944adb7388632987917"
                },
                {
                  "last_affected": "3df60e25a0caef8592d15ca16db464da0c61972a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:yaws:yaws:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.2"
                      },
                      {
                        "last_affected": "2.0.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "yaws-2.0.6",
            "yaws-2.0.5",
            "yaws-2.0.4",
            "yaws-2.0.3",
            "yaws-2.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12872.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:09.146800937Z",
      "provider": "osv",
      "references": [
        "https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70",
        "https://github.com/erlyaws/yaws/releases",
        "https://sweet32.info/",
        "https://github.com/erlyaws/yaws/issues/402",
        "https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-12872",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382483,
  "published_at": "2020-05-15T19:15:12.087+00:00"
}