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CVE-2026-57571

Crawl4AI arbitrary file write via download filename path traversal PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
unclecode / crawl4aiaffected < 0.9.0

CWE

CWE-22, CWE-59

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.