Langflow: Unauthenticated Flow Execution via Webhook Authentication Bypass

Summary A vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOKAUTHENABLE configuration is set to False. This allows a remote attacker who knows a flow's UUID ...

Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication Bypass

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-cf6m-vc3m-7cgm. This link is maintained to preserve external references. Original Description IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows...

GHSA-9CC5-J3QQ-69GV Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication Bypass

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-cf6m-vc3m-7cgm. This link is maintained to preserve external references. Original Description IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows...

CVE-2026-8505: Missing Authentication for Critical Function

IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOKAUTHENABLE configuration is set to False which is the default...