CVE-2026-57220

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*

History

25 Oct 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) RabbitMQ es un broker de mensajería y streaming. Antes de la versión 4.2.6, el listener de stream de RabbitMQ no aplica el límite de tamaño de trama de stream configurado mientras ensambla tramas durante la autenticación y antes de la negociación de Tune, permitiendo que un cliente remoto no autenticado declare longitudes de trama excesivas y consuma memoria del broker en rabbit_stream_core. Este problema se ha corregido en la versión 4.2.6.

Information

Published : 2026-07-10 21:16

Updated : 2026-10-25 15:10

NVD link : CVE-2026-57220

Mitre link : CVE-2026-57220

CVE.ORG link : CVE-2026-57220

JSON object : View

Products Affected

broadcom

rabbitmq_server

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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