Plone 5.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Plone 5.1 reached end of life on 12 Dec 2022. It no longer receives security fixes.
Support timeline
Official dates from the Plone release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 5 Feb 2018 | — |
| End of life | 12 Dec 2022 | 3.7 years ago |
| Active support ended | 2 Oct 2020 | security fixes only after this |
| Latest release | 5.1.7 · 2 Oct 2020 | final |
Where to go from 5.1
Recommended target: Plone 6.2 (supported until 31 Dec 2027).
The newest actively supported branch is Plone 6.2 (latest release 6.2.1).
Frequently asked questions
Is Plone 5.1 still safe to use?
Plone 5.1 reached end of life on 12 Dec 2022, 1,336 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Plone 5.1?
Yes — the final release (5.1.7) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Plone 5.1 to?
Upgrade to Plone 6.2, the newest actively supported branch (supported until 31 Dec 2027).