CVE-2012-4392: ownCloud Server

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

Affected products

• ownCloud ownCloud Server: version 4.0.7 only

Published 2012-09-05. Last modified 2026-06-16.