Security advisory

{
  "id": "1f303910a35dbaba00135202c5a6ee054083781ec1c5fe7388a9fb91e821e261",
  "url": "https://osv.dev/vulnerability/CVE-2018-11536",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-11536",
    "summary": "md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits.",
    "evidence": "osv:CVE-2018-11536",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-11536",
      "aliases": [
        "CVE-2018-11536"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mity/md4c",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "00ca0604f6ed8893d24eb8b227a6ef8445cd87c0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:md4c_project:md4c:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-0.2.4",
            "release-0.2.3",
            "release-0.2.1",
            "release-0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-11536.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:43.866223721Z",
      "provider": "osv",
      "references": [
        "https://github.com/mity/md4c/issues/36"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-11536",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380744,
  "published_at": "2018-05-29T07:29:00.567+00:00"
}