Crawl4AI <= 0.8.6 - Remote Code Execution

Crawl4AI through 0.8.6 ships a Docker API server that exposes an unauthenticated /crawl endpoint. The computed field type of JsonCssExtractionStrategy evaluates a user supplied expression inside an AST based sandbox that does not restrict attribute access on generator frame objects. A generator...

CVE-2026-53753-Crawl4AI-RCE

CVE-2026-53753 — Crawl4AI Unauthenticated Remote Code Execution AST Sandbox Escape Pre-authentication RCE in Crawl4AI.read — returning the command's output in-band in the JSON response...