CVE-2026-119119

High

Description

Crawl4AI before 0.9.5 contains a denial of service vulnerability in the Docker API server where _clamp_untrusted() fails to cap the delay_before_return_html, mean_delay, and max_range fields of untrusted CrawlerRunConfig bodies. Unauthenticated attackers can send huge values to /crawl or /crawl/stream to hold browser pages or stall the rate limiter, exhausting the page pool and blocking other crawls.

SeverityHigh

CVSS7.5

Exploit probability—

ProductUnclecode Crawl4ai

PublishedOct 29, 2026

First seenNov 4, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

unclecode crawl4ai0.9.5 or later

Vendor advisories

github.com/unclecode/crawl4ai/security/advisories/GHSA-rhjm-7hj7-75fx

Affected products

Product	Affected versions	Fixed in
unclecode crawl4ai	v < 0.9.5	0.9.5

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