What the vulnerability does
01Description
The ManageWP Worker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'MWP-Key-Name' HTTP request header in all versions up to, and including, 4.9.31. This is due to insufficient input sanitization and output escaping of attacker-controlled header values. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator visits the plugin's connection management page with debug parameters.
Explanation of Vulnerability in Simple Terms
02Summary
ManageWP Worker versions up to 4.9.31 contain a cross-site scripting vulnerability that allows attackers to inject malicious scripts into the application. The vulnerability can be exploited remotely without authentication or user interaction. An attacker can inject code that affects multiple users or components of the site, potentially compromising site security and user data.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in users' browsers and affects the site or other visitors.
Potential impact on your site
04Site Impact
Attackers can steal admin credentials, deface your site, or redirect visitors to malicious pages without your knowledge.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
May 14, 2026
CVE published
May 14, 2026
Record updated
