CVE WatchJul 7, 2026

CVE-2026-57571

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 f

CVSS

9.6

Critical

EPSS

0.5%

p40

KEV

—

Exploit Today

0-100

Published: Jul 6, 2026 · Last modified: Jul 7, 2026 · CWE-22 · CWE-59

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-07-072026-07-17

Technical 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.

Official references

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