Exposure of Sensitive Information to an Unauthorized Actor
The webhook endpoint in Jenkins Git Plugin 4.11.3 and earlier provide unauthenticated attackers information about the existence of jobs configured to use an attacker-specified Git repository.
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.