What the vulnerability does
01Description
The WP App Bar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'app-bar-features' parameter in all versions up to, and including, 1.5. This is due to insufficient input sanitization and output escaping combined with a missing authorization check in the `App_Bar_Settings` class constructor. This makes it possible for unauthenticated attackers to inject arbitrary web scripts into multiple plugin settings that will execute whenever a user accesses the admin settings page.
Explanation of Vulnerability in Simple Terms
02Summary
WP App Bar versions 1.5 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the application. The vulnerability can be exploited remotely without authentication or user interaction. Affected sites may serve malicious content to visitors, potentially compromising user data or redirecting traffic.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in visitors' browsers and steals data or redirects them to phishing sites.
Potential impact on your site
04Site Impact
Visitors may be exposed to malicious scripts, credential theft, or malware distribution through your site.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
March 7, 2026
CVE published
April 8, 2026
Record updated
