Vulnerability · Published Feb 12, 2026 · Assigned by VulnCheck
CVE-2026-26216Crawl4AI < 0.8.0 Docker API Unauthenticated Remote Code Execution via Hooks Parameter
Critical 10.0
In plain English
A critical-severity code injection in Crawl4AI from unclecode. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 6.4% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | crawl4ai | 0.8.0 | GHSA-5882-5rx9-xgxp |
| PyPI | crawl4ai | 0.8.0 | PYSEC-2026-33 |
Affected products (as reported)
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5882-5rx9-xgxp vendor-advisory
- https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md release-notes
- https://www.vulncheck.com/advisories/crawl4ai-docker-api-unauthenticated-remote-code-execution-via-hooks-parameter third-party-advisory