Description
Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Google, Microsoft/Azure, GitHub, and Auth0 integrations. This affects FlowiseAI Cloud and self-hosted instances where the endpoint is exposed.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Flowise | Flowise | < 3.1.0 | 3.1.0 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure http/cves/2026/CVE-2026-56270.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | flowise | < 3.1.0 | 3.1.0 | GHSA-6pcv-j4jx-m4vx |
Advisories 1
- WID-SEC-2026-1145 Flowise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 12, 2026
References
- GitHub Security Advisory (GHSA-6pcv-j4jx-m4vx) vendor-advisory
- VulnCheck Advisory: Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint third-party-advisory