# CVE-2026-57571

## Summary

- **CVE ID:** CVE-2026-57571
- **Severity:** CRITICAL
- **CVSS Score:** 9.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-22, CWE-59
- **Published:** Jul 6, 2026
- **Last Modified:** Jul 8, 2026

## Description

Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, when the crawler saves a downloaded file, the destination filename was taken from attacker-influenced input and joined to the downloads directory with no confinement. A filename containing an absolute path or traversal escaped the downloads directory, giving an arbitrary file write with attacker-controlled contents; the HTTP crawler path uses the response Content-Disposition filename and the browser crawler path uses the download's suggested filename. Because the written bytes are attacker-controlled, this can escalate to remote code execution. This issue is fixed in version 0.9.0.

## Affected Products

- unclecode — crawl4ai (< 0.9.0)

## References

- [CNA](https://github.com/unclecode/crawl4ai/security/advisories/GHSA-2jq4-q6vv-4cp3)
- [CNA](https://github.com/unclecode/crawl4ai/commit/60886d1a0c52682e4c83a7cef9dfac417fff6bd2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.81%
- **EPSS Percentile:** 55.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._