Directory Traversal vulnerability in Textpattern CMS v4.8.8 allows a remote authenticated attacker to execute arbitrary code and gain access to sensitive information via the plugin Upload function.
https://textpattern.com/file_download/118/textpattern-4.8.8.zip
https://release-demo.textpattern.co/
https://packetstormsecurity.com/files/172967/Textpattern-CMS-4.8.8-Command-Injection.html