Description
WordPress Plugin Newsletter is prone to an open redirect vulnerability because the application fails to properly sanitize user-supplied input. Exploiting this issue may allow attackers to redirect users to arbitrary web sites and conduct phishing attacks; other attacks are also possible. WordPress Plugin Newsletter version 2.6.4.4 is vulnerable; prior versions may also be affected.
Remediation
Update to the latest version
References
http://seclists.org/fulldisclosure/2015/Mar/23
http://packetstormsecurity.com/files/130647/WordPress-Newsletter-2.6.x-2.5.x-Open-Redirect.html
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