CVE-2026-8505
Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution
CRITICAL 9.8EPSS 0.7%
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).
- Affected
- IBM · Langflow OSS
- CVSS v3.1 IBM
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.72% chance of exploitation in the next 30 days, 53rd percentile
- Published
- 2026-07-17
- Updated
- 2026-07-23