CVE-2026-100607

critical · 9.2

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.

9.2

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-26

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-287

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cffm-583c-vffr
https://www.vulncheck.com/advisories/flowise-through-3.1.4-authentication-bypass-via-email-only-sso

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-100607