CVE-2026-91930 Flowise before 3.1.4 Cross-Tenant Organization Admin Takeover
Authenticated users can bypass tenant isolation to gain administrative access to other organizations by manipulating organization IDs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91930?
CVE-2026-91930 is a high-severity missing authorization vulnerability in FlowiseAI Flowise, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-266
Which versions are affected by CVE-2026-91930?
How do I fix CVE-2026-91930?
No fix has been published for CVE-2026-91930 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-91930 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91930 exists.
Sources
Also known as GHSA-2jfv-qfvv-395r, GHSA-pprx-4prj-35mj.