CVE-2013-0203: ownCloud

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 4.5.5, 4.0.10, and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) unspecified parameters to apps/calendar/ajax/event/new.php or (2) url parameter to apps/bookmarks/ajax/addBookmark.php.

Affected products

• ownCloud ownCloud: up to and including 4.0.10
• ownCloud ownCloud Server: from 4.5.0, up to and including 4.5.5

Published 2019-11-22. Last modified 2026-06-16.