Description
WordPress Plugin Social Network Tabs is prone to an information disclosure vulnerability. Attackers can exploit this issue to obtain sensitive information that may help in launching further attacks. WordPress Plugin Social Network Tabs version 1.7.1 is vulnerable; prior versions may also be affected.
Remediation
Disable the plugin until a fix is available
References
https://github.com/fs0c131y/CVE-2018-20555
https://www.wordfence.com/blog/2019/01/using-commercial-plugins-responsibly/