Flex Guten – A Multipurpose Gutenberg Blocks Plugin, CVE-2025-6256
- CVE, Research URL
- Published on
- Aug 06, 2025
- Research Description
- The Flex Guten plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘thumbnailHoverEffect’ parameter in all versions up to, and including, 1.2.5 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.
- Affected versions
-
Min -, max 1.2.5.
- Status
-
vulnerable
| Previous vulnerability researches |
|---|
| Image Gallery (CVE-2025-8400) , Aug 02, 2025 |