Joomla Exposure of Sensitive Information to an Unauthorized Actor Vulnerability - CVE-2017-7983
In Joomla 1.5.0 through 3.6.5 (fixed in 3.7.0) mail sent using the JMail API leaked the used PHPMailer version in the mail headers.
In Joomla 1.5.0 through 3.6.5 (fixed in 3.7.0) mail sent using the JMail API leaked the used PHPMailer version in the mail headers.