What’s Vulnerable › Vulnerabilities

CVE-2026-119121: Crawl4AI 0.9.0 before 0.9.5 JavaScript Injection via css_selector and wait_for

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-29 · updated 2026-10-29
• Weakness: CWE-95

Description

Crawl4AI from 0.9.0 before 0.9.5 contains a JavaScript injection vulnerability in the Docker API server that allows authenticated API clients to run arbitrary JavaScript in the crawl page via allowlisted css_selector and wait_for fields. Attackers can inject quotes into css_selector or supply js: conditions in wait_for, bypassing the js_code block to alter page state and returned crawl content.

Affected products

• unclecode crawl4ai: from 0.9.0 before 0.9.5 — fixed in 0.9.5

How to fix

Upgrade to a fixed version: unclecode crawl4ai 0.9.5. Check the vendor advisory for mitigations.

References

• https://github.com/unclecode/crawl4ai/security/advisories/GHSA-qj46-wp7m-rgj8
• https://www.vulncheck.com/advisories/crawl4ai-0.9.0-before-0.9.5-javascript-injection-via-css-selector-and-wait-for

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