CVE-2026-57220

HIGH7.5

RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS

Published Jul 10, 2026

Modified 2 months ago

Fix available

Details

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.

Affected Packages

RabbitMQ Server

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1703)Windows 10 (1709)Windows 10 (1803)

Fixed in:

4.2.6

References

WEB

https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547

WEB

https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e

WEB

https://github.com/rabbitmq/rabbitmq-server/pull/16171