Siemens Mendix Runtime

Risk Summary

Mendix documentation for access rules does not adequately describe the special behavior of the System.User entity, leaving developers without sufficient guidance to configure access rules securely. This documentation gap may lead application developers to unknowingly apply overly permissive access rules to System.User, resulting in unintended exposure of sensitive user data or privilege escalation within deployed Mendix applications. A common misconfiguration identified is with the anonymous user role with a System.User entity to gain access to all stored records, even though no access rights are explicitly configured on that role. Siemens recommends Mendix developers to review their access rules based on updated documentation.

CVEs (1)

Remediations

• Any security model relying solely on XPath constraints on a System.User specialization to restrict access should be revised to enforce restrictions at the App Security role-management configuration level instead.
• Review mendix access rules knowing that System.User has built-in platform-enforced access rules that cannot be overridden or restricted by access rules defined on a specialization. Check updated documentation for further details

Affected Vendors

Affected Products (1)

Affected Sectors

Critical Manufacturing