{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:shamaton:msgpack:*:*:*:*:*:go:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "3.1.2"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "a605fc6e40e4e17041a2d090cbd94f3966b57605"
            }
          ],
          "repo": "https://github.com/shamaton/msgpack",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Go",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32284.json"
  },
  "details": "The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.",
  "id": "CVE-2026-32284",
  "modified": "2026-07-08T05:37:06.651500114Z",
  "published": "2026-03-26T19:40:51.686Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://pkg.go.dev"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2026-4513"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32284.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32284"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/golang/vulndb/issues/4513"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/shamaton/msgpack/issues/59"
    },
    {
      "type": "EVIDENCE",
      "url": "https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Denial of service in github.com/shamaton/msgpack"
}