Silverstripe CMS 5.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Silverstripe CMS 5.1 reached end of life on 17 Oct 2024. It no longer receives security fixes.
Support timeline
Official dates from the Silverstripe CMS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 17 Oct 2023 | — |
| End of life | 17 Oct 2024 | 1.8 years ago |
| Active support ended | 17 Apr 2024 | security fixes only after this |
| Latest release | 5.1.0 · 16 Oct 2023 | final |
Where to go from 5.1
Recommended target: Silverstripe CMS 6.2 (supported until 30 Apr 2027).
The newest actively supported branch is Silverstripe CMS 6.2 (latest release 6.2.0).
Frequently asked questions
Is Silverstripe CMS 5.1 still safe to use?
Silverstripe CMS 5.1 reached end of life on 17 Oct 2024, 661 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Silverstripe CMS 5.1?
Yes — the final release (5.1.0) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Silverstripe CMS 5.1 to?
Upgrade to Silverstripe CMS 6.2, the newest actively supported branch (supported until 30 Apr 2027).