"Probably the world's most popular code for sending email from PHP!
Used by many open-source projects: WordPress, Drupal, 1CRM, SugarCRM, Yii,
Joomla! and many more"
An independent research uncovered a critical vulnerability in PHPMailer that
could potentially be used by (unauthenticated) remote attackers to achieve
remote arbitrary code execution in the context of the web server user and
remotely compromise the target web application.
To exploit the vulnerability an attacker could target common website
components such as contact/feedback forms, registration forms, password
email resets and others that send out emails with the help of a vulnerable
version of the PHPMailer class.
Responsibly disclosed to PHPMailer team.
They've released a critical security release.
If you are using an affected release update to the 5.2.18 security
release as advised at:
I know this is a bad timing and a short notice (for everyone probably ;)
I've spent most of my Christmas break working on this issue with
This has been quite a rush as one of the vendors leaked excessive
information on this vulnerability at one point which could aid
I've released a limited advisory at the link below: