CVE-2020-10776: Red Hat Keycloak

Medium severity, CVSS 4.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.

Affected products

• Red Hat Keycloak: before 12.0.0 (fixed in 12.0.0)

Published 2020-11-17. Last modified 2026-06-17.