CVE-2021-24275: Supsystic Popup

Medium severity, CVSS 6.1. EPSS: 18.2% chance of exploitation in the next 30 days.

The Popup by Supsystic WordPress plugin before 1.10.5 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue

Affected products

• Supsystic Popup: before 1.10.5 (fixed in 1.10.5)

Published 2021-05-05. Last modified 2026-06-17.