CVE-2020-1714: Quarkus

High severity, CVSS 8.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

Affected products

• Quarkus Quarkus: up to and including 1.4.2
• Red Hat Decision Manager: version 7.0 only
• Red Hat JBoss Fuse: version 7.0.0 only
• Red Hat Keycloak: before 11.0.0 (fixed in 11.0.0)
• Red Hat Openshift Application Runtimes: affected versions not specified
• Red Hat Process Automation: version 7.0 only
• Red Hat Single Sign-On: version 7.0 only

Published 2020-05-13. Last modified 2026-06-17.