Description
WordPress Plugin W3 Total Cache is prone to a server-side request forgery vulnerability. An attacker may leverage this issue to make the vulnerable server perform port scanning of hosts in internal or external networks; other attacks are also possible. WordPress Plugin W3 Total Cache version 0.9.7.3 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 0.9.7.4 or latest
References
https://www.cybersecurity-help.cz/vdb/SB2019050701
https://plugins.svn.wordpress.org/w3-total-cache/trunk/readme.txt