Scriptkiddies being especially stupid / 2019-06-18

Checking how fail2ban was doing on a wordpress site I noticed the following error in the log:

46.105.99.163 - - [18/Jun/2019:09:03:46 +0200] "GET /wp-content/plugins/ungallery/source_vuln.php?pic=../../../../../wp-config.php HTTP/1.1" 404 15933 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0"

which is never going to work as an exploit. A full explanation in Hackers Will Try To Exploit Vulnerabilities in WordPress Plugins in Ways That Will Never Succeed - Plugin Vulnerabilities but this entire attempt is based on just the description of a vulnerability and can never ever have succeeded, not even on a system with the vulnerable version of the ungallery plugin.