Exposure of Sensitive Information to an Unauthorized Actor
The Intercom plugin through 1.2.1 for WordPress leaks a Slack Access Token in source code. An attacker can obtain a lot of information about the victim's Slack (channels, members, etc.).
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.