Heap-buffer-overflow in mg_mqtt_parse

{
  "id": "cd3ec7282acf89f2b312513be87c0343d74c4db0b6d0ae97894f1757d4a5dd11",
  "url": "https://osv.dev/vulnerability/OSV-2023-345",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in mg_mqtt_parse",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58319 ``` Crash type: Heap-buffer-overflow READ 1 Crash state: mg_mqtt_parse fuzz.c ```",
    "evidence": "osv:OSV-2023-345",
    "products": [
      {
        "name": {
          "value": "mongoose",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "7.10",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2023-345",
      "aliases": [
        "OSV-2023-345"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cesanta/mongoose",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6c13df1affa425ae81e07d954af6666b4da7b895"
                },
                {
                  "fixed": "aed7b6b37ae189680dce9f5d444c90b4dc8df7a2"
                },
                {
                  "introduced": "e6f27cbaf385614f83208ef0d1bcc4cf68fcb3f2"
                },
                {
                  "fixed": "d56e5bea626fd7d1baad52af0aa7cfc4f399382c"
                }
              ]
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          ],
          "package": {
            "name": "mongoose",
            "purl": "pkg:generic/mongoose",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "7.10"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mongoose/OSV-2023-345.yaml"
          },
          "ecosystem_specific": {
            "severity": "HIGH"
          }
        }
      ],
      "modified": "2026-10-20T17:25:28.658232120Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58319"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389893,
  "published_at": "2023-04-26T14:02:05.194063+00:00"
}