CVE-2026-70478: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.…
- Occurred
- Aug 4, 2026
- Published
- Aug 4, 2026
- Source
- NVD CVE
Summary
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/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim's connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3.
Tags
- CVE
- CVE-2026-70478
- cvss:CRITICAL
Classification
Rationale: Unauthenticated endpoint allows credential decryption and OAuth token abuse, enabling unauthorized access to connected services.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8