Jenkins Ansible Plugin 204.v8191fd551eb_f and earlier stores extra variables unencrypted in job config.xml files on the Jenkins controller where they can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system.
Jenkins Ansible Plugin 204.v8191fd551eb_f and earlier does not mask extra variables displayed on the configuration form, increasing the potential for attackers to observe and capture them.
Missing permission checks in Jenkins Ansible Plugin allow attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.
A man in the middle vulnerability exists in the Jenkins Ansible Plugin that disables host key verification by default.