Description
WordPress Plugin Export Users to CSV is prone to a vulnerability that lets remote attackers inject arbitrary formulas into CSV files. Attackers can possibly exploit this issue to execute arbitrary commands on the victim's system, by the use of Microsoft Excel DDE function, or to leak data via maliciously injected hyperlinks. WordPress Plugin Export Users to CSV version 1.1.1 is vulnerable; prior versions may also be affected.
Remediation
Disable the plugin until a fix is available
References
https://hackpuntes.com/cve-2018-15571-wordpress-plugin-export-users-to-csv-1-1-1-csv-injection/
https://www.exploit-db.com/exploits/45206/
https://packetstormsecurity.com/files/148957/WordPress-Export-Users-To-CSV-1.1.1-CSV-Injection.html