Description

The Guest posting / Frontend Posting wordpress plugin – WP Front User Submit / Front Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form settings in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Severity

4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Affected Version

<= 0.2.0

PoC :

- Login
- Go To Front User Submit/Post Forms
- Click First demo form 
- Add payload enerii"><script>alert('eneri')</script> on Label.
- Save & Refresh
- Payload executed.

Reference

  • https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/front-editor/guest-posting-frontend-posting-wordpress-plugin-wp-front-user-submit-front-editor-441-authenticated-admin-stored-cross-site-scripting
  • https://www.cve.org/CVERecord?id=CVE-2024-2967