CVE-2026-119119

Crawl4AI before 0.9.5 Denial of Service via Unbounded CrawlerRunConfig Delay Fields

State: Published
Severity: 8.7 High
Published: Oct 29, 2026
Updated: Oct 29, 2026
Reserved: Oct 29, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	VulnCheck

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
crawl4aiunclecode	before 0.9.5Affected 0.9.5Not affected

References

GitHub Security Advisory (GHSA-rhjm-7hj7-75fx)vendor-advisory
VulnCheck Advisory: Crawl4AI before 0.9.5 Denial of Service via Unbounded CrawlerRunConfig Delay Fieldsthird-party-advisory

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