Langflow: Unauthenticated Flow Execution via Webhook Authentication Bypass

SummaryA 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 t...

PYSEC-2026-4233 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 ...

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 ...