- Security patch fixing Windows binary planting vulnerability (CVE‑2020‑5419) with CVSS 6.7.
- Removed support for Erlang/OTP 20.3; Erlang 21.3+ is now a hard requirement checked at startup.
- Upgrade RabbitMQ before Erlang when moving to Erlang 21+ to avoid CLI incompatibility.
RabbitMQ 3.7.28
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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.