CVE-2020-35509: Red Hat Keycloak

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.

Affected products

• Red Hat Keycloak: version 11.0.3 only; version 12.0.0 only

Published 2022-08-23. Last modified 2026-06-17.