CVE-2026-46442
Critical · 9.9CVSS
9.9
EPSS
3.4%
Published
Jun 8, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | flowise | 0 | 3.1.2 |
Related vulnerabilities
- GHSA-9rvc-vf7m-pgm2 FlowiseAI: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM… Same vulnerability
- CVE-2026-46478 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46477 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46479 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46480 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46444 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46440 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise
- CVE-2026-46475 Flowise is a drag & drop user interface to build a customized large language model flow. Also affects flowise