CSV Injection (aka Excel Macro Injection or Formula Injection) in /lib/plugins/usermanager/admin.php in DokuWiki 2018-04-22a and earlier allows remote attackers to exfiltrate sensitive data and to execute arbitrary code via a value that is mishandled in a CSV export. NOTE: the vendor has stated "this is not a security problem in DokuWiki.
https://www.sec-consult.com/en/blog/advisories/dokuwiki-csv-formula-injection-vulnerability/
https://www.patreon.com/posts/unfixed-security-21250652