Apache Flink 2.3 End of Life Date
Apache Flink 2.3 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
Apache Flink 2.3 was released on June 25, 2026 and has no published end-of-life date yet. It is not an LTS release; Apache Flink reserves longer patch windows for its LTS versions. Its most recent patch is 2.3.0, published June 23, 2026.
What does Apache Flink 2.3 end of life mean?
When Apache Flink 2.3 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Apache Flink 2.3 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Apache Flink 2.3 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.