high8.1
CVE-2026-41267
Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | flowise | <= 3.0.13 | 3.1.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Flowiseai | Flowise | before 3.1.0 |