POST SMTP Mailer <= 2.5.6 - Cross-Site Request Forgery to Account Compromise

Cross-Site Request Forgery (CSRF)
CVE CVE-2023-3179
CVSS Medium (6.5)
Publicly Published June 26, 2023
Last Updated January 22, 2024
Researcher Erwan LR
Description

The POST SMTP Mailer plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.5.6. This is due to incorrect nonce validation on the resend_email() function. This makes it possible for unauthenticated attackers to resend emails to an arbitrary email address via a forged request granted they can trick a site user with the manage_postman_smtp capability into performing an action such as clicking on a link. An attacker could leverage this to resend a password reset email to their own account and compromise a site administrators account.

References

1 affected software package

Software Type Plugin
Software Slug post-smtp (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.5.6
Patched Version
  • 2.5.7
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.