Design/Logic Flaw

Webbler CMS before 3.1.6 does not properly restrict use of "mail a friend" forms, which allows remote attackers to send arbitrary amounts of forged e-mail. NOTE: this could be leveraged for spam or phishing attacks...

Webbler CMS 3.1.3 - Mail A Friend Open Email Relay

source: https://www.securityfocus.com/bid/25045/info The 'webbler' is prone to an open-email-relay vulnerability. An attacker may leverage the issue to use webservers that are hosting the vulnerable software to send arbitrary unsolicited bulk email. Attackers may also forge email messages that...