CVE-2015-4717: ownCloud

High severity, CVSS 7.8. EPSS: 2.8% chance of exploitation in the next 30 days.

The filename sanitization component in ownCloud Server before 6.0.8, 7.0.x before 7.0.6, and 8.0.x before 8.0.4 does not properly handle $_GET parameters cast by PHP to an array, which allows remote attackers to cause a denial of service (infinite loop and log file consumption) via crafted endpoint file names.

Affected products

• ownCloud ownCloud: up to and including 6.0.7
• ownCloud ownCloud Server: version 7.0.0 only; version 7.0.1 only; version 7.0.2 only; version 7.0.3 only; version 7.0.4 only; version 7.0.5 only; …

Published 2015-10-21. Last modified 2026-06-17.