What the vulnerability does
01Description
The WP Dropzone plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'callback' shortcode attribute in all versions up to, and including, 1.1.1. This is due to insufficient input sanitization and output escaping on user-supplied 'callback' attributes, which are evaluated as JavaScript code via the `new Function()` constructor. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
WP Dropzone versions 1.1.1 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. An attacker with low-level site access can craft payloads that execute in other users' browsers, potentially compromising site security.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in other users' browsers to steal data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users with low privileges can inject scripts affecting other site users and administrators, risking data theft or unauthorized actions.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
December 12, 2025
CVE published
April 8, 2026
Record updated
