Stored Cross-Site Scripting Vulnerability in Membership Plugin for WordPress
CVE-2026-1304

4.4MEDIUM

Key Information:

Vendor

WordPress

Vendor
CVE Published:
18 February 2026

What is CVE-2026-1304?

The Membership Plugin – Restrict Content for WordPress has a vulnerability that allows authenticated users with administrator-level access to inject malicious scripts through multiple invoice settings fields. Due to insufficient input sanitization and output escaping, these scripts can be executed on web pages accessed by other users, potentially compromising their data and security. This highlights the importance of securing input fields to prevent injected scripts from running within the application.

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Affected Version(s)

Membership Plugin – Restrict Content * <= 3.2.18

References

CVSS V3.1

Score:
4.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Miguel Santareno
.