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Access violation vulnerability in Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more 3.4.1

  • Severity: medium-risk
  • Status: Fixed
  • Publication: September 2, 2025

The Post SMTP plugin for WordPress has a security issue that allows unauthorized changes to be made to data. This is because the plugin does not have a way to check if the user has the right permissions when using the ‘update_post_smtp_pro_option_callback’ function. This means that attackers who have a Subscriber-level access or higher can potentially enable pro extensions without proper authorization.

Detected in:

Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App fixed vulnerable versions:
Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more fixed vulnerable versions:

This information is sourced from www.wpvulnerability.com. An open-source database of vulnerabilities maintained by the community. Help us out by submitting vulnerabilities!

Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:

> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21

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