Erlang/OTP support after end of life: patched OTP 24, 25 and 26

No. The Erlang/OTP team supports only the three newest major releases, now OTP 29, 28 and 27. OTP 25 was first released on 18 May 2022, and its last patch release, 25.3.2.21, shipped on 8 May 2025. RabbitMQ 3.11 runs only on OTP 25, so those clusters cannot move the runtime without a broker upgrade. OSSeva ships patched OTP 25 builds today.

The Erlang/OTP security policy supports the last three major releases with maintenance and security patches. OTP 29.0 shipped on 13 May 2026 and the latest release is 29.1.2, so OTP 29, 28 and 27 are supported and OTP 26 and older are not. Majors ship each May, so a release gets about three years before the third release after it ends its support.

No. OTP 26 reached community end of life on 26 May 2026. It still runs, still reports a valid version, and still passes most inventory checks — which is why so many clusters are sitting on it. It does not receive security patches. OSSeva continues to ship patched OTP 26 builds for customers who cannot move the runtime yet.

Yes. They are separate codebases with separate advisories. RabbitMQ is an Erlang application; the TLS termination, cryptography, SSH and networking beneath it come from OTP itself. A vulnerability in Erlang's TLS or public_key application is exploitable through the broker regardless of how current the broker is.

Only within the band each broker release supports. Every RabbitMQ version declares a minimum and maximum OTP release, and moving outside it will refuse to boot or fail in subtle ways under load. OSSeva's compatibility matrix maps your current pairs and identifies which upgrades can be done independently and which must be coordinated.

Yes. Elixir compiles to BEAM bytecode and runs on the same runtime, so OSSeva's patched OTP builds cover Elixir workloads including Phoenix applications. The Elixir standard library is a separate project with its own release cadence, and OSSeva covers it alongside the runtime for the Elixir versions you run.

The ones most often found in enterprise estates are RabbitMQ, ejabberd and MongooseIM for messaging, CouchDB for storage, and VerneMQ and EMQX for MQTT. All of them inherit whatever the underlying OTP release is exposed to, and all of them are frequently deployed with a runtime nobody has revisited since installation.

The Erlang/OTP team supports the last three major releases. Operating system distribution packages and the Erlang Solutions repository follow the same window, so they stop receiving security updates once it closes. Third-party support companies cover the gap. OSSeva is a third-party option: one contract with your RabbitMQ and wider stack, end-of-life OTP releases included, and drop-in builds that run wherever you run the runtime.

Both. OSSeva's support matrix lists OTP 24, 25 and 26 as community end of life, OTP 27 and 28 as extended with community support to 20 May 2027 and 20 May 2028, and OTP 29 as current with community support to 11 May 2029, all with OSSeva patches active. Assure adds a staged OTP upgrade plan with rollback, and Operate includes rolling OTP upgrade execution across clusters.

OSSeva Erlang/OTP support is priced per cluster and is bundled at no additional cost with OSSeva for RabbitMQ. Patch covers security patches for the OTP release your brokers run on, Assure adds 24/7 reactive support and the OTP upgrade path, and Operate adds proactive 24/7 monitoring and managed operations with a 15-minute P1 SLA. OSSeva Operate patches Critical CVEs (CVSS ≥ 9.0) within 48 hours and High within 7 days. Book a discovery call for a quote.