CVE-2026-91941

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductUnclecode Crawl4ai

PublishedSep 15, 2026

First seenSep 15, 2026

Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update

unclecode crawl4ai0.9.3 or later

Vendor advisories

github.com/unclecode/crawl4ai/security/advisories/GHSA-v2rm-hvrj-2x9q

Affected products

Product	Affected versions	Fixed in
unclecode crawl4ai	v < 0.9.3	0.9.3

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