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CVE-2026-42861

CVE-2026-42861 · Flowise: Mass Assignment in Variable Update Endpoint Allows Cross-Workspace Resource Reassignment

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.6 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • flowise

    Versions
    • < 3.1.2: Affected

    No fix published

  • flowise npm

    Affected ranges
    • SEMVER: < 3.1.2

    Update to 3.1.2

Original sources

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