CVE-2026-13726: Unknown Mpg

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

The MPG WordPress plugin before 4.1.8 does not sanitise and escape a parameter before reflecting it back in the response, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting against a victim who is induced to send a crafted request.

Affected products

• Unknown Mpg: before 4.1.8 (fixed in 4.1.8)

Published 2026-07-27. Last modified 2026-07-27.