FlowiseAI: CustomTemplate create+update mass-assignment allows cross-workspace template takeover — CVE-2026-46476

Summary

## Summary **Type:** Mass assignment via `Object.assign(entity, body)` -> client-controlled `workspaceId` (and on create, `id`) overwritten on the CustomTemplate entity -> cross-workspace data takeover and IDOR. **File:** `packages/server/src/services/marketplaces/index.ts` **Root cause:** The CustomTemplate controller/service constructs a `new CustomTemplate()` and copies the request body into it via…

Product

npm: flowise

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Related advisories