CVE-2026-56258

Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

Published Jun 23, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Kidocode
Kidocode crawl4ai
CPEs cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*
Vendors & Products Kidocode
Kidocode crawl4ai
Type Values Removed Values Added
First Time appeared Crawl4ai
Crawl4ai crawl4ai
Vendors & Products Crawl4ai
Crawl4ai crawl4ai
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 14, 2026, 9:34 PM
Reserved
Jun 19, 2026, 9:56 PM
Status
Analyzed
Published
Jun 23, 2026, 1:16 PM
Modified
Jun 25, 2026, 6:38 PM