CVE-2026-1821: Microtango

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Microtango plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'restkey' parameter of the mt_reservation shortcode in all versions up to, and including, 0.9.29 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Microtango Microtango: up to and including 0.9.29

Published 2026-02-11. Last modified 2026-06-17.