Stored Cross-Site Scripting in Mmm Unity Loader Plugin for WordPress
CVE-2025-8399

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Mmm Unity Loader
Vendor
CVE Published:
2 August 2025

What is CVE-2025-8399?

The Mmm Unity Loader plugin for WordPress suffers from a vulnerability that allows authenticated attackers with Contributor-level access or higher to exploit the 'attributes' parameter. Due to inadequate input sanitization and output escaping, these attackers can inject arbitrary web scripts into webpages. Consequently, when a user accesses any page where the script has been injected, it may execute, potentially compromising user data and site integrity.

Affected Version(s)

Mmm Unity Loader * <= 1.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.svn.wordpress.org/mmm-unity-loader/trunk/...
https://wordpress.org/plugins/mmm-unity-loader/#developers

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

muhammad yudha
.
CVE-2025-8399 : Stored Cross-Site Scripting in Mmm Unity Loader Plugin for WordPress