Osom Blocks – Custom Post Type listing block, CVE-2025-5940
- CVE, Research URL
- Published on
- Jun 27, 2025
- Research Description
- The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 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 1.2.1.
- Status
-
vulnerable