High severity8.1NVD Advisory· Published Jun 30, 2026· Updated Jul 6, 2026
CVE-2026-56264
CVE-2026-56264
Description
Crawl4AI before 0.8.7 contains an arbitrary JavaScript execution vulnerability in the Docker API server's /execute_js endpoint, which accepts and executes arbitrary user-supplied JavaScript in the server's browser context with --disable-web-security enabled. An attacker can execute arbitrary JavaScript and, combined with the browser's relaxed security settings, perform server-side request forgery against internal services.
Affected products
2Patches
Vulnerability mechanics
References
2- github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfgnvdMitigationVendor Advisory
- www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpointnvdThird Party Advisory
News mentions
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