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high·Product Based Web Vulnerabilities·Updated Aug 19, 2026

Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure

Est. Time~10 seconds
Scan TypeGroup Scan
Targetsdomain, subdomain, ipv4
CostFree
3k
Times Used
continuous scan runs
0
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2026-56270
8.7
CVSShigh
Exploitable remotely over the internet · no authentication required.

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.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
Flowiseby Flowise
AFFECTED< 3.1.0SAFE ✓≥ 3.1.0
Updated Sep 9, 2026View on NVD →

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Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure CVE-2026-56270 Scanner | S4E