What the vulnerability does
01Description
The Tune Library plugin for WordPress is vulnerable to Stored Cross-Site Scripting via CSV import in all versions up to, and including, 1.6.3. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page. The vulnerability exists because the CSV import functionality lacks authorization checks and doesn't sanitize imported data, which is later rendered without escaping through the [tune-library] shortcode.
Explanation of Vulnerability in Simple Terms
02Summary
Tune Library versions up to 1.6.3 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component to affect other parts of a site or other users. Low-level authentication is required to exploit this issue.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect other site components.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other users or site functionality; data theft or account compromise possible.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level user account on the site; no user interaction required.
Key dates
06Disclosure timeline
February 6, 2026
CVE published
April 8, 2026
Record updated
