Exposure of Sensitive Information to an Unauthorized Actor
IBM Connections 4.0 through CR4, 4.5 through CR5, and 5.0 before CR4 allows remote authenticated users to obtain sensitive information by reading an "archaic" e-mail address in a response.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.