PHPMailer presents a remote code vulnerability in its execution. It is one of the most popular open source PHP libraries to send emails, and it is used by more than 9 millions of users worldwide, that’s why it has become a big failure.
The name PHPMailer is not often sounded but it is often used. Some of the most popular websites and open source web applications like WordPress, Drupal, 1CRM, Joomla and SugarCRM, use PHPMailer to send emails.
Dawid Golunski of Legal Hacker has discovered the critical PHPMailer vulnerability, the one that allows an attacker to compromise the web application by the remotely execution of arbitrary code in the context of the web server user.
Golunski has patched the vulnerability by making PHPMailer 5.2.18. Shortly after this, the version 5.2.19 has appear with a few fixed bugs.
The before created versions of PHPMailer are all affected, so we strongly advise developers and administrators to update the patched release, PHPMailer 5.2.18 or 5.2.19, the newest releases.
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