CVE-2026-56258
Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU
- State
- Published
- Severity
- 9.2 Critical
- Published
- Jun 23, 2026
- Updated
- Jul 14, 2026
- Reserved
- Jun 19, 2026
Description
Crawl4AI before 0.8.8 contains an arbitrary file write vulnerability in the screenshot and PDF endpoints that allows unauthenticated attackers to write files outside the intended directory via symlink and time-of-check-time-of-use (TOCTOU) attacks on the output_path parameter. Remote attackers can exploit insufficient path validation and symlink following to achieve arbitrary file write and potential code execution on systems where the runtime user has write access to executable or cron locations.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
Crawl4AICrawl4AI |
|
References
- GitHub Security Advisory (GHSA-7cx2-g3h9-382p)vendor-advisory
- VulnCheck Advisory: Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOUthird-party-advisory
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