CVE-2026-57220RabbitMQ is a messaging and streaming broker.
Updated under an hour ago ()
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It affects broadcom rabbitmq_server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 9, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
broadcom rabbitmq_server broadcom:rabbitmq_server | from 4.2.0 before 4.2.6 | NVD |
References
- https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547patch
- https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679epatch
- https://github.com/rabbitmq/rabbitmq-server/pull/16171issue-tracking, patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16173issue-tracking, patch
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6release-notes
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35qexploit, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.