Question 1

What happens when Apache Pulsar reaches end of life?

Accepted Answer

When Apache Pulsar reaches end of life, it stops receiving security patches, bug fixes, and new features. Currently, 12 Apache Pulsar versions are already EOL. The latest supported version is Apache Pulsar 4.2, maintained until September 24, 2026. Running an EOL version exposes your systems to unpatched security vulnerabilities with no official fix available.

Question 2

Is Apache Pulsar 4.2 still supported?

Accepted Answer

Yes. Apache Pulsar 4.2 is actively supported until September 24, 2026. It receives security patches and bug fixes. Check the version table above for the full list of supported Apache Pulsar releases and their exact end-of-life dates.

Question 3

Is it safe to use Apache Pulsar after end of life?

Accepted Answer

No. Running Apache Pulsar after EOL is not safe for production systems. Once a version reaches end of life, newly discovered CVEs are published publicly but never patched — leaving your systems permanently exposed. The only safe path is upgrading to an actively supported Apache Pulsar release.

Question 4

How to upgrade from Apache Pulsar 4.1 to Apache Pulsar 4.x?

Accepted Answer

To upgrade Apache Pulsar from 4.1 to 4.2: (1) review the official migration guide for breaking changes, (2) test your application against the new version in a staging environment, (3) update dependencies that have version constraints, (4) run your full test suite, (5) deploy with a rollback plan. The earlier you start, the more time you have to resolve compatibility issues before EOL.

Question 5

When is the next Apache Pulsar LTS version?

Accepted Answer

Apache Pulsar 4.0 is the current Long Term Support release, maintained until October 21, 2026. LTS versions are recommended for production deployments that prioritize long-term stability over new features. Plan your upgrades to coincide with LTS releases whenever possible.

Question 6

How long does Apache Pulsar support each version?

Accepted Answer

On average, Apache Pulsar supports each release for approximately 12 months (~1 years). LTS releases like Apache Pulsar 4.0 have extended support windows — maintained until October 21, 2026. The exact EOL date for each version is listed in the table above.

Version	Released	Active support	EOL date	Until EOL	Latest	CVEs	Status
4.2	Mar 24, 2026	—	Sep 24, 2026	in 107d	4.2.1	—	Active
4.1	Sep 8, 2025	—	Mar 8, 2026	93d ago	4.1.3	—	EOL
4.0 LTS	Oct 21, 2024	—	Oct 21, 2026	in 134d	4.0.10	—	Active
3.3	Jun 5, 2024	—	Dec 5, 2024	551d ago	3.3.9	—	EOL
3.2	Feb 5, 2024	—	Aug 5, 2024	673d ago	3.2.4	—	EOL
3.1	Aug 10, 2023	—	Feb 10, 2024	850d ago	3.1.3	—	EOL
3.0 LTS	May 2, 2023	—	May 2, 2025	403d ago	3.0.17	—	EOL
2.11	Jan 11, 2023	—	Jan 11, 2024	880d ago	2.11.4	—	EOL
2.10	Apr 18, 2022	—	Apr 18, 2023	1148d ago	2.10.6	—	EOL
2.9	Dec 20, 2021	—	Dec 20, 2022	1267d ago	2.9.5	—	EOL
2.8	Jun 15, 2021	—	Jun 15, 2022	1455d ago	2.8.4	—	EOL
2.7	Dec 3, 2020	—	Dec 3, 2021	1649d ago	2.7.5	—	EOL
2.6	Jun 17, 2020	—	Jun 17, 2021	1818d ago	2.6.4	—	EOL
2.5	Jan 15, 2020	—	Jan 15, 2021	1971d ago	2.5.2	—	EOL

Apache Pulsar End of Life Dates

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