CVE-2026-45226

Heym before 0.0.21 contains an authorization bypass vulnerability in workflow execution that allows authenticated users to execute arbitrary workflows by referencing victim workflow UUIDs without proper access validation. Attackers can create workflows with execute nodes or agent subWorkflowIds pointing to victim workflow UUIDs to load and execute those workflows under attacker-controlled execution paths, exposing victim workflow outputs and triggering workflow nodes with unintended side effects.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/heymrun/heym/commit/3ae3ef6a7d3609da0e910f9ed6b81e99a1661ac8
https://github.com/heymrun/heym/pull/93
https://github.com/heymrun/heym/releases/tag/v0.0.21
https://www.vulncheck.com/advisories/heym-authorization-bypass-in-workflow-execution

Configurations

No configuration.

History

26 Oct 2026, 14:10

Type	Values Removed	Values Added
Summary		(es) Heym anterior a 0.0.21 contiene una vulnerabilidad de omisión de autorización en la ejecución de flujos de trabajo que permite a usuarios autenticados ejecutar flujos de trabajo arbitrarios al referenciar UUIDs de flujos de trabajo de la víctima sin una validación de acceso adecuada. Los atacantes pueden crear flujos de trabajo con nodos de ejecución o subWorkflowIds de agente que apunten a UUIDs de flujos de trabajo de la víctima para cargar y ejecutar esos flujos de trabajo bajo rutas de ejecución controladas por el atacante, exponiendo las salidas del flujo de trabajo de la víctima y activando nodos del flujo de trabajo con efectos secundarios no deseados.

Information

Published : 2026-05-12 22:16

Updated : 2026-10-26 14:10

NVD link : CVE-2026-45226

Mitre link : CVE-2026-45226

CVE.ORG link : CVE-2026-45226

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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