CVE-2026-42861
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the variable update endpoint of FlowiseAI. The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating a variable resource. Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign variables to arbitrary workspaces. This behavior may break tenant isolation in multi-workspace environments. This issue has been patched in version 3.1.2.
How to fix
- flowiseai flowise3.1.2 or later
- flowise3.1.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flowiseai flowise | v < 3.1.2 | 3.1.2 |
| flowisenpm | v < 3.1.2 | 3.1.2 |
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Attack Surface Management
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