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.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547 Patch
- https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e Patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16171 Issue Tracking, Patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16173 Issue Tracking, Patch
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q Exploit, Vendor Advisory
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · broadcomNVD modified 2026-10-09 10:35
Affected (CPE criteria) 1
cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*
References 7
- https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547 Patch
- https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e Patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16171 Issue Tracking, Patch
- https://github.com/rabbitmq/rabbitmq-server/pull/16173 Issue Tracking, Patch
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 Release Notes
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q Exploit, Vendor Advisory
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q Exploit, Vendor Advisory