PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "libphp-phpmailer": "5.2.14+dfsg-1ubuntu0.1~esm1" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libphp-phpmailer": "5.2.14+dfsg-2.3+deb9u1build0.18.04.1" } ] }