Auth bypass in Flowiseai Flowise
CVE-2026-100607
Flowise through 3.1.4 resolves SSO and local-password users solely by email without storing provider or subject identifier bindings, allowing attackers to authenticate as any existing user by claiming their email at any configured SSO provider. Attackers can gain complete account access including chatflows, credentials, and API keys by authenticating through a different SSO provider or local password than the victim's original registration method.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-cffm-583c-vffr) (vendor-advisory)
- VulnCheck Advisory: Flowise through 3.1.4 Authentication Bypass via Email-Only SSO (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100607?
- CVE-2026-100607 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Authentication. CVSS score: 7.7/10. Published 2026-09-26.
- How severe is CVE-2026-100607?
- High severity. CVSS v3 base score is 7.7 out of 10.