CVE-2026-70470: Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
The validatePythonCodeForDataFrame blacklist in packages/components/src/pythonCodeValidator.ts can be bypassed with Unicode homoglyph identifiers, allowing arbitrary Python execution inside Pyodide and full OS command execution on the Flowise host via Pyodide’s js module interop. This reopens the RCE paths patched as GHSA-3hjv-c53m-58jj (CSV Agent) and GHSA-v38x-c887-992f (Airtable Agent).
References
- github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c
- github.com/FlowiseAI/Flowise/pull/6499
- github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-52fh-8v99-63c2
- github.com/advisories/GHSA-52fh-8v99-63c2
- nvd.nist.gov/vuln/detail/CVE-2026-70470
Code Behaviors & Features
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