CVE-2021-24671: Mx Time Zone Clocks Project Mx Time Zone Clocks

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

The MX Time Zone Clocks WordPress plugin before 3.4.1 does not escape the time_zone attribute of the mxmtzc_time_zone_clocks shortcode, allowing users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks

Affected products

• Mx Time Zone Clocks Project Mx Time Zone Clocks: before 3.4.1 (fixed in 3.4.1)

Published 2021-09-27. Last modified 2026-06-17.