-keyword-wp-includes Phpmailer Index.php Online

Download your server’s access log for the last 30 days. Search for strings containing:

If a hacker manages to upload a custom index.php file into the PHPMailer directory (or exploit a bug that lets them run that file), they gain control over your server.

An attacker probing for wp-includes/PHPMailer/index.php is not trying to break the index file. They are using the existence of this file as a marker to confirm the directory structure. Once they confirm the index file exists, they will try to access sibling files like class.phpmailer.php or class-smtp.php to check version numbers and launch exploits. -KEYWORD-wp-includes PHPMailer index.php

: Most hacks occur through outdated third-party plugins rather than WordPress core itself.

PHPMailer is a popular, robust library for sending emails via PHP. WordPress core uses PHPMailer to handle transactional emails (password resets, admin notifications, etc.). Unfortunately, it has a notorious history. Several severe vulnerabilities, including (also known as the “PHPMailer Exploit”) and CVE-2020-36326 , have allowed attackers to perform remote code execution (RCE). Download your server’s access log for the last 30 days

If you suspect your site has been compromised via this path, follow these steps:

for hardening WordPress against mailer scripts? They are using the existence of this file

to monitor file changes?