CSV Injection vulnerability in Nikto 2.1.6 and earlier allows remote attackers to inject arbitrary OS commands via the Server field in an HTTP response header, which is directly injected into a CSV report.
https://www.exploit-db.com/exploits/44899/
https://github.com/sullo/nikto/commit/e759b3300aace5314fe3d30800c8bd83c81c29f7