Description
The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1. This is due to missing nonce validation on the ms_update AJAX action. This makes it possible for unauthenticated attackers to modify child theme CSS styles via a forged request granted they can trick an administrator into performing an action such as clicking on a link.
CVSS 4.3EPSS 0.128%Risk 0.43
View source- Published
- 2026-08-01 08:16:29
- Affected versions
- <=3.1
- Type
- Web application
- Last modified
- 2026-08-03 17:16:27
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N