CVE-2026-100607

9.2 criticalEPSS 0.4%

Critical (9.2). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.2 critical

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

CVSS 3.1

7.7 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2026-09-26
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

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
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cffm-583c-vffr

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