CVE-2019-3868: Red Hat Keycloak

Low severity, CVSS 3.8. EPSS: 1% chance of exploitation in the next 30 days.

Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.

Affected products

• Red Hat Keycloak: up to and including 6.0.0

Published 2019-04-24. Last modified 2026-06-17.