10

CVSS Score

4.0

-

CVSS Score

Basic Information

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CVE-2026-26216

CVE-2026-26216: Crawl4AI < 0.8.0 Docker API Unauthenticated Remote Code Execution via Hooks Parameter

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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-26216

CVE-2026-26216:

10

CVSS Score

4.0

-

CVSS Score

Basic Information

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Technical Details

SSVC / BOD 26-04 ↗

Exploitation NoneAutomatable YesTech Impact Total

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Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Crawl4AI	pip	< 0.8.0	0.8.0

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The remote code execution vulnerability in Crawl4AI stems from the unsafe handling of user-provided Python code in the '/crawl' and '/crawl/stream' API endpoints. The core of the vulnerability is located in the HookManager.compile_hook function, which was responsible for executing code supplied in the hooks parameter. In vulnerable versions, the execution environment created by this function included the dangerous __import__ built-in. This allowed an attacker to import any Python module, such as os or subprocess, and execute arbitrary commands on the server's operating system. The exploit is triggered by sending a POST request to either the crawl or crawl_stream function with a crafted JSON payload containing malicious Python code in the hooks section. The patch mitigates this by removing __import__ from the list of allowed built-ins and by disabling the hooks feature by default, requiring an explicit configuration change to enable it.

Vulnerable functions

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Vulnerability Intelligence
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WAF Protection Rules

WAF Rule

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Reasoning

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