Vulnerabilities in pkg:pypi/Crawl4AI

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5882-5rx9-xgxp",
  "modified" : "2026-06-05T16:23:37Z",
  "published" : "2026-01-16T20:59:16Z",
  "aliases" : [ "CVE-2026-26216" ],
  "summary" : "Crawl4AI is Vulnerable to Remote Code Execution in Docker API via Hooks Parameter",
  "details" : "A critical remote code execution vulnerability exists in the Crawl4AI Docker API deployment. The `/crawl` endpoint accepts a `hooks` parameter containing Python code that is executed using `exec()`. The `__import__` builtin was included in the allowed builtins, allowing attackers to import arbitrary modules and execute system commands.\n\n**Attack Vector:**\n```json\nPOST /crawl\n{\n  \"urls\": [\"https://example.com\"],\n  \"hooks\": {\n    \"code\": {\n      \"on_page_context_created\": \"async def hook(page, context, **kwargs):\\n    __import__('os').system('malicious_command')\\n    return page\"\n    }\n  }\n}\n```\n\n### Impact\n\nAn unauthenticated attacker can:\n- Execute arbitrary system commands\n- Read/write files on the server\n- Exfiltrate sensitive data (environment variables, API keys)\n- Pivot to internal network services\n- Completely compromise the server\n\n### Mitigation\n\n1. **Upgrade to v0.8.0** (recommended)\n2. If unable to upgrade immediately:\n   - Disable the Docker API\n   - Block `/crawl` endpoint at network level\n   - Add authentication to the API\n\n### Fix Details\n\n1. Removed `__import__` from `allowed_builtins` in `hook_manager.py`\n2. Hooks disabled by default (`CRAWL4AI_HOOKS_ENABLED=false`)\n3. Users must explicitly opt-in to enable hooks\n\n### Credits\n\nDiscovered by Neo by ProjectDiscovery (https://projectdiscovery.io)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Crawl4AI"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5882-5rx9-xgxp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-26216"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/crawl4ai/PYSEC-2026-33.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/unclecode/crawl4ai"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/blog/release-v0.8.0.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/migration/v0.8.0-upgrade-guide.md"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/crawl4ai-docker-api-unauthenticated-remote-code-execution-via-hooks-parameter"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-16T20:59:16Z",
    "nvd_published_at" : "2026-02-12T16:16:17Z"
  }
}