| Package | Affected versions | Patched versions |
|---|---|---|
| org.keycloak:keycloak-core | < 4.0.0 | 4.0.0 |
| keycloak | < 4.0.0 | 4.0.0 |
| single sign-on | = 7.2 |
keycloak before version 4.0.0.final is vulnerable to a infinite loop in session replacement. A Keycloak cluster with multiple nodes could mishandle an expired session replacement and lead to an infinite loop. A malicious authenticated user could use this flaw to achieve Denial of Service on the server.
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