Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nazsabuz | WP Dropzone | ≤ 1.1.1 | — |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/23953909-4836-4226-b00b-eb0e24cc3ad7?source=cve
- https://plugins.trac.wordpress.org/browser/wp-dropzone/trunk/includes/class-plugin.php#L303
- https://plugins.trac.wordpress.org/browser/wp-dropzone/trunk/js/wp-dropzone.js#L86
- https://plugins.trac.wordpress.org/browser/wp-dropzone/tags/1.1.1/includes/class-plugin.php#L303
- https://plugins.trac.wordpress.org/browser/wp-dropzone/tags/1.1.1/js/wp-dropzone.js#L86