Description
The Sky Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `sky-custom-scripts` custom post type in all versions up to, and including, 3.3.2. This is due to the custom post type being registered with `capability_type => 'post'` and `show_in_rest => true`, combined with insufficient input sanitization on the `sky_script_content` meta field and lack of output escaping when rendering scripts on the frontend. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts via the REST API that execute on every frontend page for all site visitors.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| wowdevs | Sky Addons – Elementor Addons with Widgets & Templates | ≤ 3.3.2 | — |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cfaa8ffd-549e-4803-aa17-d1317a606e7a?source=cve
- https://plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.3.2/includes/custom-scripts/class-custom-scripts-data.php#L128
- https://plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.3.2/includes/custom-scripts/class-custom-scripts-loader.php#L270
- https://plugins.trac.wordpress.org/browser/sky-elementor-addons/trunk/includes/custom-scripts/class-custom-scripts-data.php#L134
- https://plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.3.3/includes/custom-scripts/class-custom-scripts-data.php#L134
- https://plugins.trac.wordpress.org/browser/sky-elementor-addons/trunk/includes/custom-scripts/class-custom-scripts-loader.php#L237
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3521696%40sky-elementor-addons%2Ftrunk&old=3517772%40sky-elementor-addons%2Ftrunk&sfp_email=&sfph_mail=