Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FlowiseAI | Flowise | < 3.1.3 | 3.1.3 |
Advisories 1
- WID-SEC-2026-2589 Flowise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 9, 2026
References
- GitHub Security Advisory (GHSA-rqh4-rxw3-93rp) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: Flowise before 3.1.3 Sandbox Escape to RCE third-party-advisory