Stored Cross-Site Scripting in Post SMTP Plugin for WordPress
CVE-2025-0521

7.2HIGH

Key Information:

Vendor

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

What is CVE-2025-0521?

The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the 'from' and 'subject' parameters. This security flaw allows unauthenticated attackers to inject malicious web scripts into pages, which are executed whenever a user visits any affected page. It is crucial for users to ensure their installations are updated to mitigate the risk of exploitation.

Affected Version(s)

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App 0 <= 3.0.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset?sfp_email=&s...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

D.Sim
.