CVE-2007-4544: WordPress Mu

Medium severity, CVSS 4.3. EPSS: 0.9% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in wp-newblog.php in WordPress multi-user (MU) 1.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the weblog_id parameter (Username field).

Affected products

• WordPress WordPress Mu: up to and including 1.0

Published 2007-08-27. Last modified 2026-06-16.