Joomla! contact form send copy abuse

Details of BNVL-2018-0033

What does the BNVL label mean?

BitNinja Server Security’s BNVL identifiers are intended for use to identify publicly known information security vulnerabilities in publicly released software packages. This project was designed to collect and analyze attack information from the BitNinja network after cluster analysis by the AI-powered Attack Vector Miner. More than 100 vulnerability types have been discovered with this project so far, so we decided to publish this platform to help to keep Linux server owners up-to-date.

Important! All listed BNVL vulnerabilities are protected by BitNinja PRO, so please check your configurations if your infrastructure is affected by any of them.

Syntax for BNVL labels:

BNVL prefix + Year + Arbitrary Digits

Name :
Joomla! contact form send copy abuse
Related Links: Na



The Joomla! com_contact form module has a vulnerability that an attacker can abuse to send spam. The contact form allows any visitor to specify a sender address. The system sends a copy of the contact message to the sender. The abusers use this functionality to send spam to any e-mail address. The contact form behaves like an open relay email server.

Pattern: contact_email_copy