Jenkins Active Directory Plugin 2.25 and earlier does not encrypt the transmission of data between the Jenkins controller and Active Directory servers in most configurations.
A cross-site request forgery (CSRF) vulnerability in Jenkins Active Directory Plugin 2.19 and earlier allows attackers to perform connection tests, connecting to attacker-specified or previously configured Active Directory servers using attacker-specified credentials.
A missing permission check in Jenkins Active Directory Plugin 2.19 and earlier allows attackers with Overall/Read permission to access the domain health check diagnostic page.