CVE-2013-1421: Webcalendar Project Webcalendar

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Craig Knudsen WebCalendar before 1.2.5, 1.2.6, and other versions before 1.2.7 allows remote attackers to inject arbitrary web script or HTML via the Category Name field to category.php.

Affected products

• Webcalendar Project Webcalendar: up to and including 1.2.4; version 1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; …

Published 2014-04-22. Last modified 2026-06-16.