Langflow Authorization Bypass Through User-Controlled Key Vulnerability

Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request...

Exploit for Authorization Bypass Through User-Controlled Key in Langflow

CVE-2026-55255 - Langflow IDOR in /api/v1/responses Exec...

GHSA-QRPV-Q767-XQQ2 Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Summary Insecure Direct Object Reference IDOR vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. Details The vulnerability exists in the getflowbyidorendpointname helper...

PT-2026-51099

Name of the Vulnerable Software and Affected Versions Langflow versions prior to 1.9.1 Description An Insecure Direct Object Reference IDOR issue exists in the /api/v1/responses endpoint. This occurs because the get flow by id or endpoint name function fails to verify if the authenticated user ow...