What the vulnerability does
01Description
The Contact Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title’ parameter in all versions up to, and including, 8.6.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, 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
Contact Manager versions 8.6.5 and earlier contain a cross-site scripting vulnerability that allows authenticated administrators to inject malicious scripts. The vulnerability requires high privileges and complex attack conditions to exploit. When successful, it can affect other users and systems interacting with the vulnerable component, potentially compromising data integrity.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers when they interact with the application.
Potential impact on your site
04Site Impact
An admin account compromise could allow script injection affecting other users and connected systems.
Conditions required to exploit
05Prerequisites
Attacker must have administrator-level access to the Contact Manager application.
Key dates
06Disclosure timeline
August 19, 2025
CVE published
April 8, 2026
Record updated
