Stored Cross-Site Scripting in User Registration & Membership Plugin for WordPress
CVE-2025-13367

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
Vendor
CVE Published:
15 December 2025

What is CVE-2025-13367?

The User Registration & Membership Plugin for WordPress is prone to a Stored Cross-Site Scripting vulnerability that arises from inadequate input validation and output encoding in multiple shortcode attributes. This issue affects all versions up to and including 4.4.6, allowing authenticated attackers with contributor-level access or higher to embed malicious scripts within pages. When users access these compromised pages, the injected scripts execute, posing significant security risks.

Affected Version(s)

User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder 0 <= 4.4.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3412096/user...
https://plugins.trac.wordpress.org/changeset/3412096/user...

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 - DJ
.