CVE-2026-0555: Premmerce

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

The Premmerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'premmerce_wizard_actions' AJAX endpoint in all versions up to, and including, 1.3.20. This is due to missing capability checks and insufficient input sanitization and output escaping on the `state` parameter. This makes it possible for authenticated attackers, with subscriber level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page (the Premmerce Wizard admin page).

Affected products

• Premmerce Premmerce: up to and including 1.3.20

Published 2026-02-07. Last modified 2026-06-17.