CVE-2025-8399

MEDIUM 6.4

Mmm Unity Loader <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via attributes Parameter

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

The Mmm Unity Loader plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘attributes’ parameter in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CWE	CWE-79
Vendor	mmanifesto
Product	mmm unity loader
Published	Aug 2, 2025
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

mmanifesto / Mmm Unity Loader

0 ≤ 1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/2cee1d75-278c-45c6-915d-60aae6a4d3a2?source=cve plugins.svn.wordpress.org: https://plugins.svn.wordpress.org/mmm-unity-loader/trunk/mmm-unity-loader.php wordpress.org: https://wordpress.org/plugins/mmm-unity-loader/#developers

Credits

Muhammad Yudha - DJ