What the vulnerability does
01Description
The JavaScript Notifier plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin settings in all versions up to, and including, 1.2.8. This is due to insufficient input sanitization and output escaping on user-supplied attributes in the `wp_footer` action. 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.
Explanation of Vulnerability in Simple Terms
02Summary
JavaScript Notifier versions 1.2.8 and earlier contain a cross-site scripting vulnerability. An attacker with high privileges can inject malicious scripts that affect other parts of the application or connected systems. The vulnerability requires specific conditions to exploit and has limited impact on confidentiality and integrity.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that executes in other users' browsers or affects connected systems.
Potential impact on your site
04Site Impact
A privileged attacker could inject scripts affecting your site's functionality or connected applications.
Conditions required to exploit
05Prerequisites
Attacker must have high-level privileges on the site; no user interaction required.
Key dates
06Disclosure timeline
January 24, 2026
CVE published
April 8, 2026
Record updated
