Apache Pulsar 4.1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Apache Pulsar 4.1 reached end of life on 8 Mar 2026. It no longer receives security fixes.
Support timeline
Official dates from the Apache Pulsar release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 8 Sept 2025 | — |
| End of life | 8 Mar 2026 | 0.4 years ago |
| Extended support ends | 8 Mar 2026 | over |
| Latest release | 4.1.3 · 19 Feb 2026 | final |
Where to go from 4.1
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 4.1 still safe to use?
Apache Pulsar 4.1 reached end of life on 8 Mar 2026, 154 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Apache Pulsar 4.1?
Yes — the final release (4.1.3) 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 4.1 to?
Upgrade to Apache Pulsar 4.2, the newest actively supported branch (supported until 24 Sept 2026).