CVE-2013-0304: ownCloud

Medium severity, CVSS 4.0. EPSS: 1% chance of exploitation in the next 30 days.

ownCloud Server before 4.5.7 does not properly check ownership of calendars, which allows remote authenticated users to read arbitrary calendars via the calid parameter to /apps/calendar/export.php. NOTE: this issue has been reported as a cross-site request forgery (CSRF) vulnerability, but due to lack of details, it is uncertain what the root cause is.

Affected products

• ownCloud ownCloud: up to and including 4.5.6
• ownCloud ownCloud Server: version 4.5.0 only; version 4.5.1 only; version 4.5.2 only; version 4.5.3 only; version 4.5.4 only; version 4.5.5 only

Published 2014-06-05. Last modified 2026-06-16.