- Skip this 3.13.3 release and upgrade directly to 3.13.6+; it now requires Erlang 26 and will refuse to start on older Erlang versions (breaking compatibility).
- Fixes multiple core broker issues – exception in classic queue store, corrected x‑death header handling, enforced per‑vhost limits for AMQP 1.0/MQTT/Stream/STOMP, improved exchange‑type errors, and optimized large‑message store recovery.
RabbitMQ 3.13.3
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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.