CVE-2026-5092: Greenshift <= 12.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Data URI
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customapi action handler in versions up to, and including, 12.8.9. This is due to insufficient sanitization of API responses before output via innerHTML. 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 the injected page.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must be authenticated to the WordPress site and have at least Contributor-level access. They can inject script content into pages through the affected customapi action handler.
Who is exposed to the injected script?
The injected script executes whenever a user accesses the affected page. This can affect users with higher privileges, including site administrators, if they view the malicious page.
Which Greenshift versions are affected?
The vulnerability affects Greenshift versions up to and including 12.8.9.