PT-2026-52872 · Pypi · Crawl4Ai

Published 2026-06-23 · Updated 2026-06-23

OSV

CVSS v4.0

9.2

Critical

Base vector

AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Related Identifiers

PYSEC-2026-228

Affected Products

Crawl4Ai

References · 3

• https://osv.dev/vulnerability/PYSEC-2026-228 · Vendor Advisory
• https://github.com/unclecode/crawl4ai/security/advisories/GHSA-7cx2-g3h9-382p · Note
• https://vulncheck.com/advisories/crawl4ai-arbitrary-file-write-via-output-path-symlink-and-toctou · Note