Description
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `_gspb_post_css` post meta value and the `dynamicAttributes` block attribute in all versions up to, and including, 12.8.5 due to insufficient input sanitization and output escaping. 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.
Problem types
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Product status
* (semver)
Timeline
| 2026-02-07: | Discovered |
| 2026-02-16: | Vendor Notified |
| 2026-03-05: | Disclosed |
Credits
Athiwat Tiprasaharn
Itthidej Aramsri
References
www.wordfence.com/...-cd25-4bcd-aa75-3ccbfbb1452a?source=cve
plugins.trac.wordpress.org/...er-blocks/tags/12.8.3/init.php
plugins.trac.wordpress.org/...er-blocks/tags/12.8.3/init.php
plugins.trac.wordpress.org/.../blockrender/element/block.php