Jenkins and Jenkins Plugin are both Jenkins open source products. jenkins is an application. An open source automation server, Jenkins provides hundreds of plugins to support building, deploying, and automating any project.Jenkins Plugin is an application.Jenkins Proxmox Plugin 0.6.0 and earlier versions are vulnerable to a trust management issue that could be exploited by an attacker to disable the entire Jenkins controller JVM of the entire Jenkins controller JVM for SSL/TLS certificate authentication.