Flowise unauthenticated OAuth secret disclosure in loginmethod API

Severity: medium · CVSS 5.3 · Published 2026-04-16

Technologies: flowise (npm). Vendors: npm.

Executive brief

Flowise allows unauthenticated users to retrieve sensitive OAuth credentials and SSO configurations in cleartext via the /api/v1/loginmethod endpoint.

Affected products

npm flowise

Related threats

Flowise before 3.1.3 contains an incomplete credential redaction vulnerability in the GET /api/v1/credentials/:id endpoint that returns decr
Flowise before 3.1.4 fails to validate chatflow visibility in the unauthenticated text-to-speech endpoint, allowing attackers to abuse priva
Flowise versions before 3.1.3 contain an insecure direct object reference vulnerability in the GET /api/v1/organization/customer-default-sou
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, a prompt injection sent to a chatfl