- Requires Erlang 24.2 or later, dropping support for Erlang 23; nodes on older releases will fail to start.
- Fixed a core server type analyzer definition bug.
- Patched LDAP plugin to stop password leakage in exception logs.
RabbitMQ 3.9.26
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Core server bug fixes: duplicate direct‑reply deliveries, quorum queue recovery issues, malformed AMQP 1.0 frames, topic‑exchange wildcard limits, and OAuth proxy header handling.