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TI-2026-40623 Aliases CVE-2026-56258GHSA-wx2c-3cp2-f6qw

Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

Priority MEDIUM 43CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00912 60th percentileScored 2026-11-07
Fix Fixed Crawl4AI (Crawl4AI): 0.8.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
unclecodeCrawl4AIbefore 0.8.80.8.8Patch availableCNA
  • Crawl4AI Vendorunclecode Affected before 0.8.8 Fixed in 0.8.8 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*before 0.8.8Vulnerableunclecode
  • cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:* Versions before 0.8.8 Vulnerable ·unclecode

Remediation

  • Fix · CNA Crawl4AI (Crawl4AI) Fixed in 0.8.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56258
  2. 2026-10-03 Alias added: GHSA-wx2c-3cp2-f6qw

References

Advisory 1

  • TI-2026-38760 Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API CVSS 3.1CRITICAL 10.0
  • TI-2026-40630 Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key CVSS 4.0CRITICAL 9.3
  • TI-2026-21207 Crawl4AI < 0.8.0 Docker API Unauthenticated Remote Code Execution via Hooks Parameter CVSS 4.0CRITICAL 10.0
  • TI-2026-41423 Crawl4AI: Unauthenticated RCE via Chromium launch-argument injection in browser_config.extra_args CVSS 3.1CRITICAL 10.0
  • TI-2026-21208 Crawl4AI < 0.8.0 Docker API Local File Inclusion via file URL Handling CVSS 4.0CRITICAL 9.2
  • TI-2026-40631 Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints CVSS 4.0CRITICAL 9.2
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences