CVE-2026-70474 - Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
CVE ID :CVE-2026-70474
Published : Aug. 4, 2026, 6:01 p.m. | 54 minutes ago
Description :Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to 3.1.3, Flowise has three OAuth2 credential endpoints that look up credentials by id alone with no workspaceId filter. The authorize, callback, and refresh handlers query the Credential table by id only; callback and refresh are whitelisted from authentication. This allows any authenticated user to initiate OAuth2 flows against credentials belonging to other workspaces, allows an unauthenticated attacker to forge OAuth2 callbacks to overwrite tokens in any credential, and allows an unauthenticated attacker to refresh tokens for any credential. The affected routes include /api/v1/oauth2-credential/authorize/, /api/v1/oauth2-credential/callback?code=ATTACKER_AUTH_CODE&state=, and /api/v1/oauth2-credential/refresh/. This issue is fixed in version 3.1.3.
Severity: 0.0 | NA
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Published : Aug. 4, 2026, 6:01 p.m. | 54 minutes ago
Description :Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to 3.1.3, Flowise has three OAuth2 credential endpoints that look up credentials by id alone with no workspaceId filter. The authorize, callback, and refresh handlers query the Credential table by id only; callback and refresh are whitelisted from authentication. This allows any authenticated user to initiate OAuth2 flows against credentials belonging to other workspaces, allows an unauthenticated attacker to forge OAuth2 callbacks to overwrite tokens in any credential, and allows an unauthenticated attacker to refresh tokens for any credential. The affected routes include /api/v1/oauth2-credential/authorize/
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...