A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
CVE-2023-6291
CVSS base score
7.1 (v3.1)
Severity
HIGH
Attack vector
Network
Weakness
CWE-601
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Affected products
redhat keycloak
redhat single sign-on
redhat openshift container platform
redhat openshift container platform for ibm z
redhat openshift container platform for linuxone
redhat openshift container platform for power
redhat migration toolkit for applications
References
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com Vendor Advisory
- access.redhat.com
- access.redhat.com
- access.redhat.com