CVE-2026-41267
High
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.
SeverityHigh
CVSS8.1
Exploit probability—
ProductFlowise
PublishedApr 23, 2026
First seenApr 23, 2026
How to fix
Update
- flowiseai flowise3.1.0 or later
- flowise3.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flowiseai flowise | v < 3.1.0 | 3.1.0 |
| flowisenpm | v < 3.1.0 | 3.1.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.