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.
References7
- plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.…
- plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.…
- plugins.trac.wordpress.org/browser/sky-elementor-addons/tags/3.…
- plugins.trac.wordpress.org/browser/sky-elementor-addons/trunk/i…
- plugins.trac.wordpress.org/browser/sky-elementor-addons/trunk/i…
- plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&repo…
- www.wordfence.com/threat-intel/vulnerabilities/id/cfaa8ffd-549e…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 16 · as of 13 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.