CVE-2026-78003
The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST['addresses'], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site's API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover.
Schwachstellenklasse
The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST['addresses'], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site's API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover.
Quellen
- https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259
- https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323
- https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331
- https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557
- https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259
- https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323
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