Bug 2499203 (CVE-2026-57220) - CVE-2026-57220 rabbitmq-server: RabbitMQ: Denial of Service via oversized stream frames
Summary: CVE-2026-57220 rabbitmq-server: RabbitMQ: Denial of Service via oversized str...
Keywords:
Status: NEW
Alias: CVE-2026-57220
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-10 21:01 UTC by OSIDB Bzimport
Modified: 2026-07-28 12:45 UTC (History)
7 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-10 21:01:19 UTC 
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.
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