CVE-2026-91930: Flowiseai Flowise

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Flowise before 3.1.4 fails to scope enterprise organization and workspace membership APIs to the caller's tenant, allowing authenticated users to supply arbitrary organization IDs. Attackers can add themselves as organization owners, create workspaces, and gain administrative access to victim organizations by exploiting insufficient tenant isolation in the organizationuser and workspace endpoints.

Affected products

• Flowiseai Flowise: before 3.1.4 (fixed in 3.1.4)

Published 2026-09-15. Last modified 2026-09-23.