Auth bypass in Flowiseai Flowise
CVE-2026-91929
Flowise versions before 3.1.4 contain cross-tenant authorization gaps in Enterprise endpoints that fail to verify resource ownership before operations. Attackers with Enterprise access can delete arbitrary workspaces, invite themselves into other organizations, modify cross-org roles, and abuse stored SSO secrets.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-7x8x-vv46-4579 (vendor-advisory)
- www.vulncheck.com/advisories/flowise-before-3.1.4-cross-tenant-authorization-by… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91929?
- CVE-2026-91929 is a high-severity vulnerability in Flowiseai Flowise, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-09-15.
- How severe is CVE-2026-91929?
- High severity. CVSS v3 base score is 7.1 out of 10.