Security advisory

{
  "id": "5162cc0f8314318f5c898a4f1e0550229d03ea7c798188f34cf1e7ff66588784",
  "url": "https://osv.dev/vulnerability/CVE-2019-12874",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-12874",
    "summary": "An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.",
    "evidence": "osv:CVE-2019-12874",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-12874",
      "aliases": [
        "CVE-2019-12874"
      ],
      "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/videolan/vlc-3.0",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8d432b090e08f141ce9156dc728afbed4636301b"
                },
                {
                  "last_affected": "86cee310996569c2ee419a457107141ac472536b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:videolan:vlc_media_player:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "last_affected": "3.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.7",
            "3.0.6",
            "3.0.5-2",
            "3.0.5-1",
            "3.0.5",
            "3.0.4",
            "3.0.3-1",
            "3.0.3",
            "3.0.2",
            "3.0.1",
            "3.0.0-2",
            "3.0.0.1",
            "3.0.0-1",
            "3.0.0",
            "3.0.0-rc8",
            "3.0.0-rc7",
            "3.0.0-rc6",
            "3.0.0-rc5",
            "3.0.0-rc4",
            "3.0.0-rc3",
            "3.0.0-rc2",
            "3.0.0-rc1",
            "3.0.0-git"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12874.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:49.846962950Z",
      "provider": "osv",
      "references": [
        "https://usn.ubuntu.com/4074-1/",
        "https://security.gentoo.org/glsa/201908-23"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-12874",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437081,
  "published_at": "2019-06-18T18:15:11.107+00:00"
}