Medium · published August 2, 2026
Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies (for example, only allowing access during business hours). A flaw was discovered where a user can include a fake time value in their authorization request that overrides the actual server time. This allows the user to bypass these time-based restrictions and access protected resources at unauthorized times.
| Product | Versions | Fixed in |
|---|---|---|
| redhat/build_of_keycloak | all versions | — |