Threats Tagged 'cve-2026-53753'
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Threats Tagged 'cve-2026-53753'
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0 Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.7, the _safe_eval_expression() function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes (gi_frame, f_back, f_builtins) do NOT start with underscore, enabling a complete sandbox escape to achieve arbitrary code execution. The attack requires no authentication (JWT disabled by default) and is triggered via POST /crawl with a crafted extraction schema. This vulnerability is fixed in 0.8.7. Join the discussion | CVE Database V5 | 06/23/2026, 18:17:18 UTC Added: 06/23/2026, 18:54:13 UTC |
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