Critical · published August 13, 2026
Flowise before 3.1.3 contains a sandbox escape vulnerability in the vm2 JavaScript sandbox that allows authenticated users to execute arbitrary code by exploiting moment locale validation bypass. Attackers can craft a fake String object with a match function that bypasses path traversal checks to load and execute malicious JavaScript files stored in the document store outside the sandbox.
| Product | Versions | Fixed in |
|---|---|---|
| flowiseai/flowise | < 3.1.3 | 3.1.3 |