Description

The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘event_type’ parameter in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability is only exploitable when the Post SMTP Pro plugin is also installed and its Reporting and Tracking extension is enabled.

INFO

Published Date :

2026-03-18T15:28:29.140Z

Last Modified :

2026-04-08T16:48:13.127Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3090 vulnerability.

Vendors Products
Saadiqbal
  • Post Smtp – Complete Email Deliverability And Smtp Solution With Email Logs, Alerts, Backup Smtp & Mobile App
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3090.

URL Resource
https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/PostmanEmailLogs.php#L459 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset/3484515/ cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/3f8cbbbb-2089-4966-8fd3-da4f76fb2517?source=cve cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact