CVE-2020-14302: Red Hat Keycloak

Medium severity, CVSS 4.9. EPSS: 1% chance of exploitation in the next 30 days.

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.

Affected products

• Red Hat Keycloak: before 13.0.0 (fixed in 13.0.0)

Published 2020-12-15. Last modified 2026-06-17.