The Apache Flink Community is pleased to announce the fifth bug fix release of the Flink 1.20 series. This release includes 4 bug fixes, vulnerability fixes, and minor improvements for Flink 1.20. Below you will find a list of all bug fixes and improvements (excluding improvements to the build infrastructure and build stability).
Apache Flink 1.20.5 Release Announcement
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June 8, 2026
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flink