Apache Pulsar 2.5 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Apache Pulsar 2.5 reached end of life on 15 Jan 2021. It no longer receives security fixes.
Support timeline
Official dates from the Apache Pulsar release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 15 Jan 2020 | — |
| End of life | 15 Jan 2021 | 5.6 years ago |
| Extended support ends | 15 Jan 2021 | over |
| Latest release | 2.5.2 · 19 May 2020 | final |
Where to go from 2.5
Recommended target: Apache Pulsar 4.2 (supported until 24 Sept 2026).
The newest actively supported branch is Apache Pulsar 4.2 (latest release 4.2.4).
Frequently asked questions
Is Apache Pulsar 2.5 still safe to use?
Apache Pulsar 2.5 reached end of life on 15 Jan 2021, 2,032 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Apache Pulsar 2.5?
Yes — the final release (2.5.2) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Apache Pulsar 2.5 to?
Upgrade to Apache Pulsar 4.2, the newest actively supported branch (supported until 24 Sept 2026).