CVE-2021-38359: Invitebox

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

The WordPress InviteBox Plugin for viral Refer-a-Friend Promotions WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the message parameter found in the ~/admin/admin.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.4.1.

Affected products

• Invitebox Invitebox: up to and including 1.4.1

Published 2021-09-10. Last modified 2026-06-17.