- Requires Erlang 26; nodes on older Erlang versions will fail to start, making it a breaking upgrade change.
- Introduces a per‑node channel limit to protect against channel leaks and includes numerous bug fixes across classic/quorum queues, stream plugin, OAuth2, management UI, and more.
- Adds API enhancements for queue totals, federation buffer queue type customization, and updates core dependencies (osiris 1.8.1, khepri 0.13.0, cowboy 2.12.0).
RabbitMQ 3.13.1
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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.