High · CVSS 8.7CVE-2026-119119

Crawl4AI before 0.9.5 Denial of Service via Unbounded CrawlerRunConfig Delay FieldsCVE-2026-119119

Answer in brief

CVE-2026-119119 records a High severity (CVSS 8.7) vulnerability in Crawl4AI before 0.9.5 Denial of Service via Unbounded CrawlerRunConfig Delay Fields. The current sources do not mark it as known exploited. The current feed maps unclecode/crawl4ai (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.7
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps unclecode/crawl4ai (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
unclecode/crawl4aigeneric	>=0 <0.9.5	0.9.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for unclecode/crawl4ai.
Review the reported fix. Update unclecode/crawl4ai to 0.9.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 29, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 Unbounded Memory Growth via Component-Model Resource HandlesAlso CWE-770