Hot on the heels of Hudson 1.370, which was released last Friday, the Hudson team released 1.371 which addresses a critical vulnerability in all Hudson versions prior to 1.371. The vulnerability was disclosed by InfraDNA in the following security advisory, which details the issue:
This critical vulnerability allows an attacker to use CLI commands that they are otherwise unauthorized for. CLI commands can perform various administrative operations.
It is advised that all Hudson instances be upgraded immediately to avoid data loss or other ill effects from this issue. If you're upgrading from a version earlier than 1.370, you can consult the changelog for details on the other bug fixes and enhancements covered by the upgrade of your version to 1.371.