Stored Cross-Site Scripting Vulnerability in Premmerce Plugin for WordPress

CVE-2026-0555

What is CVE-2026-0555?

The Premmerce plugin for WordPress contains a vulnerability that permits stored Cross-Site Scripting (XSS) through its 'premmerce_wizard_actions' AJAX endpoint. This issue arises from inadequate capability checks, along with insufficient sanitization and escaping of input on the 'state' parameter. As a result, authenticated attackers with subscriber-level access and higher can deploy malicious scripts that execute whenever users access the affected pages, including the Premmerce Wizard admin page.

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References