STphp EasyNews PRO 4.0 stores sensitive information under the web root with insufficient access control, which allows remote attackers to obtain usernames, email addresses, and password hashes via a direct request for data/users.txt.
https://www.exploit-db.com/exploits/3039
https://exchange.xforce.ibmcloud.com/vulnerabilities/31171
http://www.vupen.com/english/advisories/2007/0011