CVE-2026-91930
Flowise before 3.1.4 Cross-Tenant Organization Admin Takeover
- State
- Published
- Severity
- 7.7 High
- Published
- Sep 15, 2026
- Updated
- Sep 20, 2026
- Reserved
- Sep 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-266 Incorrect Privilege Assignment
Affected Products
| Product | Versions |
|---|---|
FlowiseFlowiseAI |
|
References
- GitHub Security Advisory (GHSA-pprx-4prj-35mj)vendor-advisory
- VulnCheck Advisory: Flowise before 3.1.4 Cross-Tenant Organization Admin Takeoverthird-party-advisory
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