Data Modification Vulnerability in Post SMTP Plugin for WordPress
CVE-2025-9219

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Post Smtp – Complete Email Deliverability And Smtp Solution With Email Logs, Alerts, Backup Smtp & Mobile App
Vendor
CVE Published:
3 September 2025

What is CVE-2025-9219?

The Post SMTP plugin for WordPress, designed for managing SMTP configurations and email notifications, is susceptible to unauthorized data modifications. This vulnerability stems from a lack of capability checks in the 'update_post_smtp_pro_option_callback' function. As a result, authenticated users with Subscriber-level access or higher can enable pro features without the necessary permissions. Users are encouraged to update to the latest version to mitigate this risk.

Affected Version(s)

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App 0 <= 3.4.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/post-smtp/trun...
https://plugins.trac.wordpress.org/changeset/3353624/

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Matteo Leonelli
David Dewes
.