An issue was discovered in Appsmith before 1.51. Users invited as "App Viewer" incorrectly have access to development information of a workspace (specifically, a list of datasources in a workspace they're a member of). This information disclosure does not expose sensitive data in the datasources, such as database passwords and API Keys.
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.