CVE-2026-10547

IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7282647	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) IBM Langflow OSS 1.0.0 hasta 1.10.3 no valida correctamente la propiedad en el endpoint obsoleto POST /API/v1/build/{flow_id}/vertices, permitiendo a un usuario autenticado inyectar datos de grafo arbitrarios en una caché compartida para cualquier flujo. Esto puede resultar en contaminación de caché entre usuarios, ejecución de flujo de trabajo no autorizada o denegación de servicio.

Information

Published : 2026-08-05 19:17

Updated : 2026-10-23 21:10

NVD link : CVE-2026-10547

Mitre link : CVE-2026-10547

CVE.ORG link : CVE-2026-10547

JSON object : View

Products Affected

langflow

langflow

CWE

CWE-284

Improper Access Control

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