An attacker can craft a request to the authorization endpoint using the auth-code grant type, and specify a manipulated redirection URI via the redirect_uri parameter which can cause the authorization server to redirect the resource owner user-agent to a URI under the control of the attacker with the leaked authorization code. External References: https://pivotal.io/security/cve-2019-11269
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-11269