What the vulnerability does
01Description
The Mandatory Field plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.6.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Mandatory Field versions up to 1.6.8 contain a cross-site scripting vulnerability that allows high-privilege users to inject malicious scripts affecting other users or the site scope. The vulnerability requires high attack complexity and high privileges to exploit. Low confidentiality and integrity impact. Update to a version newer than 1.6.8.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that affect other users or site functionality.
Potential impact on your site
04Site Impact
High-privilege accounts could be abused to inject scripts affecting site visitors or other users.
Conditions required to exploit
05Prerequisites
Attacker must have high-level privileges (e.g., admin or editor role) and exploit requires high attack complexity.
Key dates
06Disclosure timeline
March 21, 2026
CVE published
April 8, 2026
Record updated
