Osom Blocks <= 1.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via class_name Parameter
mediumThe 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-l...
- CVSS:
- 6.4
- Affected:
- up to 1.2.1
- Fixed in:
- 1.2.2
- Disclosed:
- Jun 26, 2025