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

12 May 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-12 22:16

Updated : 2026-05-13 15:26

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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