Keycloak 12.0 End of Life
Support dates, vulnerabilities published since end of life, and upgrade guidance — rebuilt from live data.
Keycloak 12.0 reached end of life on 6 May 2021. It no longer receives security fixes.
Support timeline
Official dates, read directly from github.com.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 17 Dec 2020 | — |
| End of life | 6 May 2021 | 5.3 years ago |
| Latest release | 12.0.4 · 1 Mar 2021 | final |
The cost of staying: CVEs since end of life
48 Keycloak vulnerabilities have been published since 6 May 2021. All were fixed in supported branches — 12.0 received none of them. Source: NVD.
Keycloak CVEs published since 12.0's EOL, by year
4 of the 48 are rated critical · data refreshed 2026-08-09
Published 7 Jul 2023 · rated critical — fixed in supported branches only, never in 12.0. Details
Published 8 Jul 2022 · rated critical — fixed in supported branches only, never in 12.0. Details
Published 28 May 2021 · rated critical — fixed in supported branches only, never in 12.0. Details
This product uses data from the NVD API but is not endorsed or certified by the NVD.
Where to go from 12.0
Recommended target: Keycloak 26.7.
The newest actively supported branch is Keycloak 26.7 (latest release 26.7.1).
Frequently asked questions
Is Keycloak 12.0 still safe to use?
No. Keycloak 12.0 stopped receiving security fixes on 6 May 2021. Since then, 48 Keycloak vulnerabilities have been published and fixed in supported branches — Keycloak 12.0 received none of those fixes.
Can I still download Keycloak 12.0?
Yes — the final release (12.0.4) 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 12.0 to?
Upgrade to Keycloak 26.7, the newest actively supported branch.