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David Krauser
63c3c70fe9
Custom profile attributes (properties) in Mattermost need to support security-critical use cases like Attribute-Based Access Control (ABAC), external identity system synchronization, and privacy-preserving collaboration. Without access controls on these properties, any user or component could modify property fields and values, making them unsuitable for security decisions. Additionally, different properties require different visibility patterns - some need to be publicly readable, some should only be visible to their managing system, and some require privacy-preserving visibility where users can only see shared values. This change introduces the PropertyAccessService, a wrapper around PropertyService that enforces access control for all property operations. This service is introduced in isolation and is not yet hooked up to the Plugin API, REST API, or app layer. It provides the foundation for a single enforcement point that will apply access restrictions consistently across all code paths once integrated.