Jenkins Stack Hammer Plugin Stores API Keys Unencrypted in Job `config.xml` Files

Jenkins Stack Hammer Plugin 1.0.6 and earlier stores Stack Hammer API keys unencrypted in job config.xml files on the Jenkins controller as part of its configuration.

These API keys can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system.

As of publication of this advisory, there is no fix.