Keycloak 23.0 End of Life
Support dates, vulnerabilities published since end of life, and upgrade guidance — rebuilt from live data.
Keycloak 23.0 reached end of life on 4 Mar 2024. It no longer receives security fixes.
Support timeline
Official dates, read directly from github.com.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 23 Nov 2023 | — |
| End of life | 4 Mar 2024 | 2.4 years ago |
| Latest release | 23.0.7 · 22 Feb 2024 | final |
The cost of staying: CVEs since end of life
12 Keycloak vulnerabilities have been published since 4 Mar 2024. All were fixed in supported branches — 23.0 received none of them. Source: NVD.
Keycloak CVEs published since 23.0's EOL, by year
0 of the 12 are rated critical · data refreshed 2026-08-09
Published 5 Mar 2026 · rated high — fixed in supported branches only, never in 23.0. Details
Published 17 Apr 2024 · rated high — fixed in supported branches only, never in 23.0. Details
Published 10 Sept 2024 · rated high — fixed in supported branches only, never in 23.0. Details
This product uses data from the NVD API but is not endorsed or certified by the NVD.
Where to go from 23.0
Recommended target: Keycloak 26.7.
The newest actively supported branch is Keycloak 26.7 (latest release 26.7.1).
Frequently asked questions
Is Keycloak 23.0 still safe to use?
No. Keycloak 23.0 stopped receiving security fixes on 4 Mar 2024. Since then, 12 Keycloak vulnerabilities have been published and fixed in supported branches — Keycloak 23.0 received none of those fixes.
Can I still download Keycloak 23.0?
Yes — the final release (23.0.7) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Keycloak 23.0 to?
Upgrade to Keycloak 26.7, the newest actively supported branch.