An information disclosure vulnerability exists in the challenge functionality of instipod DuoUniversalKeycloakAuthenticator 1.0.7 plugin. A specially crafted HTTP request can lead to a disclosure of sensitive information. A user logging into Keycloak using DuoUniversalKeycloakAuthenticator plugin triggers this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1907
https://github.com/instipod/DuoUniversalKeycloakAuthenticator/releases/tag/1.0.8