CVE-2021-3603 — Inclusion of Functionality from Untrusted Control Sphere in PHPMailer/PHPMailer
PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If th…
Published: 2021-06-17 · CVSS: 8.1 · CVSS 3.1
PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, defined by PHPMailer::$validator), and the global namespace contains a function called php, it will be called in preference to the built-in validator of the same name. Mitigated in PHPMailer 6.5.0 by denying the use of simple strings as validator function names.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7