# CVE-2026-91930

## Summary

- **CVE ID:** CVE-2026-91930
- **Severity:** HIGH
- **CVSS Score:** 7.7 (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)
- **CWE:** CWE-266
- **Published:** Sep 15, 2026
- **Last Modified:** 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.

## Affected Products

- FlowiseAI — Flowise (0)
- FlowiseAI — Flowise (3.1.4)

## References

- [CNA](https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-pprx-4prj-35mj)
- [CNA](https://www.vulncheck.com/advisories/flowise-before-3.1.4-cross-tenant-organization-admin-takeover)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.37%
- **EPSS Percentile:** 31.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._