4.2
Medium
CVE-2026-9689 A flaw was found in Keycloak, an open-source identity and access management solution
Description
A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat build of Keycloak 26.4 26.4 | earliest → < 26.4-22 | 26.4-22 |
| Red Hat build of Keycloak 26.4.14 | Versions not published | |
| Red Hat build of Keycloak 26.6 26.6 | earliest → < 26.6-11 | 26.6-11 |
| Red Hat build of Keycloak 26.6.5 | Versions not published |
References
- RHSA-2026:50846 access.redhat.com
- RHSA-2026:50847 access.redhat.com
- RHSA-2026:50848 access.redhat.com
- RHSA-2026:50849 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2481845 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Red Hat Build of Keycloak
The 275 CVEs of Red Hat Build of Keycloak →
CVE-2026-97848
Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization
6.5
Medium
CVE-2026-97367
Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover
6.4
Medium
CVE-2026-96547
Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles
6.5
Medium
CVE-2026-96460
Keycloak-services: keycloak-services: indefinite access token renewal via standard token exchange v2
5.4
Medium