crawl4ai CVE-2026-91940 arbitrary file write

CVE-2026-91940 crawl4ai 0.9.3: POST /crawl with PDFContentScrapingStrategy and attacker-controlled imagesavedir writes extracted image streams to disk. Hosts a minimal PDF on lhost:lport and triggers /crawl. Patched versions return HTTP 400 not permitted. Requires API token on 0.9.2. !/usr/bin/en...