CVE-2026-70470
CRITICAL(9.8)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 9.8 — Kritisch
Erwähnungen (letzte 60 Tage)
EPSS-Score
0.9%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
9.8
Technische Schwere
SecBoard-Einordnung
CVE-2026-70470 betrifft Flowise, eine Drag-and-Drop-Benutzeroberfläche zum Erstellen von Large Language Model Flows. Die Schwachstelle ermöglicht die Umgehung der Python-Code-Validierung in der Funktion validatePythonCodeForDataFrame durch Unicode-Homoglyphen. Dies führt zu beliebiger Python-Ausführung innerhalb von Pyodide und vollständiger Betriebssystembefehlsausführung auf dem Flowise-Host über Pyodide js module interop. Betroffen sind Versionen vor 3.1.3.
KI-gestützte Einordnung auf Basis der NVD-Daten.
Beschreibung
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.
Betroffene Produkte
- cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
GitHub Advisories
Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
Referenzen
- https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304...
- https://github.com/FlowiseAI/Flowise/pull/6499
- https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-52fh-8v99-63c2
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-52fh-8v99-63c2