CVE-2026-73601

8.8 Élevée

Publiée le 13/08/2026 à 14:17 · Modifiée le 04/09/2026 à 21:33 · Analysée par le NVD · Source : disclosure@vulncheck.com

Description

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOM_MCP_PROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and BROWSER environment variables with python3, or leverage the root working directory with node to bypass validation and execute system commands.

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Produits concernés

FlowiseAI Flowise

Scores CVSS

Version	Score	Source	Vecteur
4.0	9.0 Critique	disclosure@vulncheck.com	`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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`
3.1	8.8 Élevée	nvd@nist.gov (NVD)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-95

Références

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-g98q-rm45-q9h8 Vendor Advisory
https://www.vulncheck.com/advisories/flowise-before-remote-code-execution-via-custom-mcp Third Party Advisory

CVE-2026-73601

Description

Produits concernés

Scores CVSS

Faiblesses (CWE)

Références

Ailleurs