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CVE-2026-56258

CVE-2026-56258 · Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.2 · Critical · EPSS 0.9% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • crawl4ai

    Versions
    • ≥ 0, < 0.8.8: Affected (semver)
    • 0.8.8: Not affected (semver)

    Update to 0.8.8

  • crawl4ai PyPI

    Versions
    • 0.3.0
    • 0.3.1
    • 0.3.2
    • 0.3.3
    • 0.3.4
    • 0.3.5
    • 0.3.6
    • 0.3.7
    • 0.3.71
    • 0.3.72
    • 0.3.73
    • 0.3.731
    • 0.3.74
    • 0.3.741
    • 0.3.742
    • 0.3.743
    • 0.3.744
    • 0.3.745
    • 0.3.746
    • 0.3.8
    • 0.4.0
    • 0.4.1
    • 0.4.21
    • 0.4.22
    • 0.4.23
    • 0.4.24
    • 0.4.241
    • 0.4.242
    • 0.4.243
    • 0.4.244
    • 0.4.245
    • 0.4.246
    • 0.4.247
    • 0.4.248
    • 0.4.248b3
    • 0.4.3b1
    • 0.4.3b2
    • 0.4.3b3
    • 0.5.0
    • 0.5.0.post1
    • 0.5.0.post2
    • 0.5.0.post3
    • 0.5.0.post4
    • 0.5.0.post5
    • 0.5.0.post6
    • 0.5.0.post7
    • 0.5.0.post8
    • 0.6.0
    • 0.6.0rc1
    • 0.6.1
    • 0.6.2
    • 0.6.3
    • 0.7.0
    • 0.7.1
    • 0.7.2
    • 0.7.3
    • 0.7.4
    • 0.7.5
    • 0.7.6
    • 0.7.7
    • 0.7.8
    • 0.8.0
    • 0.8.5
    • 0.8.6
    • 0.8.7
    Affected ranges
    • ECOSYSTEM: < 0.8.8

    Update to 0.8.8

Original sources

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