- Core server fixes: tie‑binding bug, correct storage of password‑less users, consumer activity updates, argument validation, default queue type handling, and smarter feature‑flag sync; plus enhancements like per‑node channel limits, paral...
- CLI, stream, and management plugins receive numerous bug fixes and security hardenings – CORS header validation, hidden internal error details in 500 responses, consistent lowercase headers, HSTS/CSP warnings, and stream protocol perform...
- Upgrade notes: requires newer Erlang versions (nodes will fail on older releases), recommends reading 4.3.0 notes, and includes dependency upgrades (cuttlefish 3.9.1, cowboy 2.16.0, cowlib 2.17.0, gun 2.4.0).
RabbitMQ 4.3.2
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Core fixes: quorum‑queue metrics/snapshot after upgrades, stricter and faster AMQP 1.0 parsing.
Minimum supported Erlang version upgraded to 27.0; Erlang/OTP 26 is now unsupported, causing nodes on older Erlang to fail to start (breaking change).
Minimum supported Erlang version upgraded to 27.0; nodes on older Erlang will refuse to start.