Haraka affected by DoS via `__proto__` email header

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with __proto__: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4.

Haraka version 2.8.8 and earlier comes with a plugin for processing attachments for zip files. Versions 2.8.8 and earlier can be vulnerable to command injection.