CVE-2006-1336: Extcalendar

Medium severity, CVSS 5.0. EPSS: 6.7% chance of exploitation in the next 30 days.

Cross-site scripting vulnerability in calendar.php in ExtCalendar 1.0 and possibly other versions before 2.0 allows remote attackers to inject arbitrary web script or HTML via the (1) year, (2) month, (3) next, and (4) prev parameters.

Affected products

• Extcalendar Extcalendar: version 1.0 only

Published 2006-03-21. Last modified 2026-06-16.