PHPFox 3.7.3 and 3.7.4 allows remote authenticated users to bypass intended "Only Me" restrictions and "like" a publication via a request that specifies the ID for the publication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/92335
http://www.securityfocus.com/bid/66672
http://www.securityfocus.com/archive/1/531745/100/0/threaded