CVE-2026-70470Critical· 9.8▾ MidnightFlowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, Flowise validatePythonCodeForDataFrame in packages/components/src/pythonCodeValidator.ts can be bypassed with Unicode homoglyph iden…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.2 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Last analysed / modified upstream
— → 9.8
0.5% → 0.9%
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, Flowise validatePythonCodeForDataFrame 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 js module interop. The validator gates pyodide.runPythonAsync in packages/components/nodes/agents/CSVAgent/CSVAgent.ts and packages/components/nodes/agents/AirtableAgent/AirtableAgent.ts with an ASCII word-boundary blacklist. JavaScript regex word boundaries are ASCII-only, while Python 3 NFKC-normalizes identifiers at parse time, so homoglyph forms such as cl𝐚ss, subcl𝐚sses, b𝐚se, and b𝐮iltins bypass the blacklist and are parsed as their ASCII equivalents. This issue is fixed in version 3.1.3.
flowise < 3.1.3Upgrade past the affected range:
flowise 3.1.3Affected packages:
flowise <= 3.1.2flowise-components <= 3.1.2Patched in:
flowise 3.1.3flowise-components 3.1.3Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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