Crawl4AI Has Local File Inclusion in Docker API via file:// URLs
A local file inclusion vulnerability exists in the Crawl4AI Docker API. The /execute_js, /screenshot, /pdf, and /html endpoints accept file:// URLs, allowing attackers to read arbitrary files from the server filesystem.
Attack Vector:
POST /execute_js
{
"url": "file:///etc/passwd",
"scripts": ["document.body.innerText"]
}Impact
An unauthenticated attacker can:
- Read sensitive files (/etc/passwd, /etc/shadow, application configs)
- Access environment variables via /proc/self/environ
- Discover internal application structure
- Potentially read credentials and API keys
Workarounds
- Disable the Docker API
- Add authentication to the API
- Use network-level filtering
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | crawl4ai | < 0.8.0 | 0.8.0 |
References
- https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md
- https://github.com/unclecode/crawl4ai/security/advisories/GHSA-vx9w-5cx4-9796
- https://www.vulncheck.com/advisories/crawl4ai-docker-api-local-file-inclusion-via-file-url-handling
- https://nvd.nist.gov/vuln/detail/CVE-2026-26217
- https://github.com/pypa/advisory-database/tree/main/vulns/crawl4ai/PYSEC-2026-34.yaml
- https://github.com/unclecode/crawl4ai
- https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/blog/release-v0.8.0.md
- https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/migration/v0.8.0-upgrade-guide.md
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N- Weakness (CWE)
CWE-22- Platform
- Python (PyPI)
- Package
crawl4ai- Disclosed
- 16.01.2026
- Updated
- 11.10.2026 12:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-34 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-vx9w-5cx4-9796 - CC BY 4.0
Vulnerability history: crawl4ai
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 12
- First → latest
- 04.2025 06.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 6
- High 5
- Medium 1
Disclosures per year
- 2025: 1
- 2026: 11
-
Crawl4AI Has Local File Inclusion in Docker API via file:// URLs this entry
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