CVE-2026-8505

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).

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7278921	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) IBM Langflow OSS 1.0.0 hasta 1.10.0 tiene una vulnerabilidad en la lógica de autenticación de webhook de Langflow que permite a usuarios no autenticados activar la ejecución de cualquier flujo. El sistema omite incorrectamente la validación de clave API cuando la configuración WEBHOOK_AUTH_ENABLE está establecida en False (que es la configuración predeterminada). Esto permite a un atacante remoto que conoce el UUID de un flujo ejecutarlo como si fuera el propietario, lo que podría conducir a la ejecución remota de código (RCE).

Information

Published : 2026-07-17 20:17

Updated : 2026-10-24 20:10

NVD link : CVE-2026-8505

Mitre link : CVE-2026-8505

CVE.ORG link : CVE-2026-8505

JSON object : View

Products Affected

linux

linux_kernel

langflow

langflow

microsoft

windows

apple

macos

CWE

CWE-306

Missing Authentication for Critical Function

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