Apache Flink 1.18 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Apache Flink 1.18 reached end of life on 24 Mar 2025. It no longer receives security fixes.
503 days without security patches
Recommended action: upgrade to Apache Flink 2.3. Support timeline
Official dates from the Apache Flink release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 24 Oct 2023 | — |
| End of life | 24 Mar 2025 | 1.4 years ago |
| Latest release | 1.18.1 · 16 Jan 2024 | final |
Where to go from 1.18
Recommended target: Apache Flink 2.3.
The newest actively supported branch is Apache Flink 2.3 (latest release 2.3.0).
Frequently asked questions
Is Apache Flink 1.18 still safe to use?
Apache Flink 1.18 reached end of life on 24 Mar 2025, 503 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Apache Flink 1.18?
Yes — the final release (1.18.1) 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 Flink 1.18 to?
Upgrade to Apache Flink 2.3, the newest actively supported branch.