CVE-2026-91941 [HIGH] – Crawl4AI before 0.9.3 contains an uncontrolled resource consumption vulnerability in PDFCo

Crawl4AI before 0.9.3 contains an uncontrolled resource consumption vulnerability in PDFContentScrapingStrategy that allows untrusted clients to cause denial of service. Attackers can select the PDF scraping strategy in POST requests to download large remote PDFs without size or page limits, exhausting disk, CPU, and bandwidth on shared workers.