CVE-2026-42862
Flowise: Mass Assignment in Tool Update Endpoint Allows Cross-Workspace Resource Reassignment
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 tool update endpoint of FlowiseAI. The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating a tool resource. Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign tools to arbitrary workspaces. This breaks tenant isolation in multi-workspace environments. This issue has been patched in version 3.1.2.
| CWE | CWE-284 CWE-639 CWE-915 |
| Vendor | flowiseai |
| Product | flowise |
| Published | Jun 8, 2026 |
| Last Updated | Jun 8, 2026 |
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