Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE (FlowiseAI Flowise)
En bref
- Source
- NVD
- EPSS
- EPSS 0.97 % · centile 62 ()
- Ătat
- PUBLISHED
- Publiée
- Mise Ă jour
- Attribuée par
- GitHub_M
- Statut NVD
- Analyzed
Description
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 __clđss__, __subclđsses__, __bđse__, and __bđźiltins__ bypass the blacklist and are parsed as their ASCII equivalents. This issue is fixed in version 3.1.3.
Faiblesses (CWE)
- CWE-184 â Liste d'entrĂ©es interdites incomplĂšte
Références
Scores
| Version | Score | Vecteur | ĂvaluĂ© par |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 9.5 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | GitHub_M |
| CVSS 4.0 | CRITICAL 9.5 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
Avis
- GHSA-52fh-8v99-63c2 â Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
Références européennes
- ENISA EUVD · EUVD-2026-52811
- GCVE · GCVE-0-2026-70470
Configurations affectées (CPE NVD)
cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*< 3.1.3
Produits affectés
| Produit | Versions |
|---|---|
| FlowiseAI · Flowise | affected < 3.1.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST â attribution requested |
| ENISA EUVD | ENISA â reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain â this product uses data from the NVD API but is not endorsed or certified by the NVD |