Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When E2B_APIKEY is not configured — the common deployment case — Flowise executes this code inside a NodeVM sandbox. This sandbox can be escaped, allowing an attacker to reach the host process object and execute system commands via child_process. The result is authenticated remote code execution on the Flowise server host. This issue has been patched in version 3.1.2.
Problem types
CWE-94: Improper Control of Generation of Code ('Code Injection')
Product status
References
github.com/...lowise/security/advisories/GHSA-9rvc-vf7m-pgm2
github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.2