CVE-2020-28644: ownCloud

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

The CSRF (Cross Site Request Forgery) token check was improperly implemented on cookie authenticated requests against some ocs API endpoints. This affects ownCloud/core version < 10.6.

Affected products

• ownCloud ownCloud: before 10.6.0 (fixed in 10.6.0)

Published 2021-02-09. Last modified 2026-06-17.