Keycloak 26.3 · Version Status
Keycloak 26.3 End of Life Date
Keycloak 26.3 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Keycloak 26.3 is past end of life. This version no longer receives security patches. 221 days past EOL — migrate to a supported version immediately.
EOL Date
Sep 30, 2025
221 days past EOL
Latest Release
26.3.5
Standard release
Release Date
Jul 2, 2025
Keycloak 26.3 series
| Version | Latest | EOL Date | Status |
|---|
| 10.0 |
10.0.2 |
Jul 22, 2020 |
EOL |
| 11.0 |
11.0.3 |
Dec 16, 2020 |
EOL |
| 12.0 |
12.0.4 |
May 6, 2021 |
EOL |
| 13.0 |
13.0.1 |
Jun 18, 2021 |
EOL |
| 14.0 |
14.0.0 |
Jul 15, 2021 |
EOL |
| 15.0 |
15.0.2 |
Dec 10, 2021 |
EOL |
| 15.1 |
15.1.1 |
Dec 17, 2021 |
EOL |
| 16.0 |
16.0.0 |
Dec 20, 2021 |
EOL |
What does Keycloak 26.3 end of life mean?
When Keycloak 26.3 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Keycloak 26.3 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Keycloak 26.6 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Keycloak 26.3 reach end of life?
Keycloak 26.3 reached end of life on September 30, 2025. This version is no longer receiving security patches.
Is Keycloak 26.3 still supported?
No. Keycloak 26.3 reached end of life on September 30, 2025 and is no longer receiving security patches.
What should I upgrade to from Keycloak 26.3?
The recommended upgrade from Keycloak 26.3 is
Keycloak 26.6 — the latest actively supported version. Check the
Keycloak full timeline for all supported versions.
What are the security risks of running Keycloak 26.3 past EOL?
When Keycloak 26.3 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Keycloak should migrate immediately or implement compensating controls.