CVE-2021-38337: Carrcommunications Rsvpmaker Excel

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

The RSVPMaker Excel WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to a reflected $_SERVER["PHP_SELF"] value in the ~/phpexcel/PHPExcel/Shared/JAMA/docs/download.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.1.

Affected products

• Carrcommunications Rsvpmaker Excel: up to and including 1.1

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