CVE-2026-8505: Langflow: Unauthenticated Flow Execution via Webhook Authentication Bypass
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. 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) or Denial of Service (DoS).
References
- github.com/advisories/GHSA-cf6m-vc3m-7cgm
- github.com/langflow-ai/langflow/commit/cb6f7508dda83ead9c3e4417e96e4b5bd9a260c3
- github.com/langflow-ai/langflow/pull/12845
- github.com/langflow-ai/langflow/releases/tag/v1.9.1
- github.com/langflow-ai/langflow/security/advisories/GHSA-cf6m-vc3m-7cgm
- nvd.nist.gov/vuln/detail/CVE-2026-8505
- www.ibm.com/support/pages/node/7278921
Code Behaviors & Features
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