Vulnerability-Lookup

CVE-2026-26216 (GCVE-0-2026-26216)

Vulnerability from cvelistv5 – Published: 2026-02-12 15:31 – Updated: 2026-02-12 21:01

Title

Crawl4AI < 0.8.0 Docker API Unauthenticated Remote Code Execution via Hooks Parameter

Summary

Crawl4AI versions prior to 0.8.0 contain a remote code execution vulnerability in the 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 unauthenticated remote attackers to import arbitrary modules and execute system commands. Successful exploitation allows full server compromise, including arbitrary command execution, file read and write access, sensitive data exfiltration, and lateral movement within internal networks.

Severity ?

10 (Critical)


                        
                          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

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

VulnCheck

References

URL

Tags

	https://github.com/unclecode/crawl4ai/security/ad…	vendor-advisorypatch
	https://github.com/unclecode/crawl4ai/blob/main/d…	release-notes
	https://www.vulncheck.com/advisories/crawl4ai-doc…	third-party-advisory

Impacted products

	Vendor	Product	Version
	unclecode	Crawl4AI	Affected: 0 , < 0.8.0 (semver)

Credits

Neo by ProjectDiscovery (https://neo.projectdiscovery.io)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-26216

Vulnerability from fkie_nvd - Published: 2026-02-12 16:16 - Updated: 2026-02-13 14:23

Severity ?

10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md
	disclosure@vulncheck.com	https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5882-5rx9-xgxp
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/crawl4ai-docker-api-unauthenticated-remote-code-execution-via-hooks-parameter

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Crawl4AI versions prior to 0.8.0 contain a remote code execution vulnerability in the 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 unauthenticated remote attackers to import arbitrary modules and execute system commands. Successful exploitation allows full server compromise, including arbitrary command execution, file read and write access, sensitive data exfiltration, and lateral movement within internal networks."
    }
  ],
  "id": "CVE-2026-26216",
  "lastModified": "2026-02-13T14:23:48.007",
  "metrics": {
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GHSA-5882-5RX9-XGXP

Vulnerability from github – Published: 2026-01-16 20:59 – Updated: 2026-02-12 20:09

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.

Attack Vector:

POST /crawl
{
  "urls": ["https://example.com"],
  "hooks": {
    "code": {
      "on_page_context_created": "async def hook(page, context, **kwargs):\n    __import__('os').system('malicious_command')\n    return page"
    }
  }
}

Impact

An unauthenticated attacker can: - Execute arbitrary system commands - Read/write files on the server - Exfiltrate sensitive data (environment variables, API keys) - Pivot to internal network services - Completely compromise the server

Mitigation

Upgrade to v0.8.0 (recommended)
If unable to upgrade immediately:
Disable the Docker API
Block /crawl endpoint at network level
Add authentication to the API

Fix Details

Removed __import__ from allowed_builtins in hook_manager.py
Hooks disabled by default (CRAWL4AI_HOOKS_ENABLED=false)
Users must explicitly opt-in to enable hooks

Credits

Discovered by Neo by ProjectDiscovery (https://projectdiscovery.io)

Severity ?

10.0 (Critical)


                  
                    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

Show details on source website

JSON

To clipboard

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        "name": "Crawl4AI"
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  ],
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    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-16T20:59:16Z",
    "nvd_published_at": "2026-02-12T16:16:17Z",
    "severity": "CRITICAL"
  },
  "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__(\u0027os\u0027).system(\u0027malicious_command\u0027)\\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)",
  "id": "GHSA-5882-5rx9-xgxp",
  "modified": "2026-02-12T20:09:29Z",
  "published": "2026-01-16T20:59:16Z",
  "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": "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Crawl4AI is Vulnerable to Remote Code Execution in Docker API via Hooks Parameter"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-26216 (GCVE-0-2026-26216)

FKIE_CVE-2026-26216

GHSA-5882-5RX9-XGXP

Impact

Mitigation

Fix Details

Credits

Tags

Sightings

Nomenclature