CVE-2021-39313: Duogeek Simple Image Gallery

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

The Simple Image Gallery WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the msg parameter found in the ~/simple-image-gallery.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.0.6.

Affected products

• Duogeek Simple Image Gallery: up to and including 1.0.6

Published 2021-12-14. Last modified 2026-06-17.