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 WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).
https://www.ibm.com/support/pages/node/7278921
https://github.com/langflow-ai/langflow/security/advisories/GHSA-cf6m-vc3m-7cgm
https://github.com/langflow-ai/langflow/releases/tag/v1.9.1
https://github.com/langflow-ai/langflow/pull/12845
https://github.com/langflow-ai/langflow/commit/cb6f7508dda83ead9c3e4417e96e4b5bd9a260c3