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 0.7.0 and earlier versions are vulnerable to cross-site request forgery, which can be exploited by an attacker to use its specified username and password to connect to host specified by the attacker (to perform a connection test).