{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2022-1471",
  "revision": 1,
  "title": "SnakeYaml — Unrestricted Type Instantiation on Load",
  "summary": "The library's default loader builds whatever object type a document names, so parsing attacker-supplied configuration text runs their code inside the application.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.99569,
  "exploitation": {
    "known_exploited": false,
    "exploit_available": true,
    "attack_complexity": "low",
    "prerequisites": "An application parsing attacker-supplied configuration text"
  },
  "remediation": {
    "patch_available": true
  },
  "mitre_attack": [
    "T1190",
    "T1059"
  ],
  "kill_chain": "execution",
  "recommended_action": "Upgrade the library past 1.33 and load untrusted documents with the safe constructor only.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2022-1471",
      "retrieved_at": "2026-08-07T17:02:45.847Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2022-1471",
      "retrieved_at": "2026-08-07T17:02:45.847Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2022-1471",
      "retrieved_at": "2026-08-07T17:02:45.847Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1471",
      "label": "NVD record"
    },
    {
      "type": "exploit",
      "url": "https://github.com/google/security-research/security/advisories/GHSA-mjmj-j48q-9wg2"
    },
    {
      "type": "exploit",
      "url": "https://github.com/mbechler/marshalsec"
    },
    {
      "type": "exploit",
      "url": "https://www.github.com/mbechler/marshalsec/blob/master/marshalsec.pdf?raw=true"
    },
    {
      "type": "writeup",
      "url": "https://bitbucket.org/snakeyaml/snakeyaml/issues/561/cve-2022-1471-vulnerability-in#comment-64581479"
    }
  ],
  "published_at": "2022-12-01T11:15:10.553Z",
  "issued_at": "2026-08-07T17:02:45.847Z",
  "tags": [
    "java",
    "deserialization",
    "library"
  ]
}