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CVE-2026-57220

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

Published: Jul 10, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-770
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 57.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-770

Affected Products

rabbitmq
oss-project·GBaka rabbitmq-server
rabbitmq-serverOn-prem
Databases / cache-message-queue
broadcom
commercial·USaka broadcom inc
rabbitmq serverOn-prem
Cloud & SaaS

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q
github.com
https://github.com/rabbitmq/rabbitmq-server/pull/16171
github.com
https://github.com/rabbitmq/rabbitmq-server/pull/16173
github.com
and 3 more references View all →

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