Jenkins Job Import Plugin vulnerable to exposure of sensitive information

An exposure of sensitive information vulnerability exists in Jenkins Job Import Plugin 2.1 and earlier in src/main/java/org/jenkins/ci/plugins/jobimport/JobImportAction.java, src/main/java/org/jenkins/ci/plugins/jobimport/JobImportGlobalConfig.java, src/main/java/org/jenkins/ci/plugins/jobimport/model/JenkinsSite.java that allows attackers with Overall/Read permission to have Jenkins connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.