CVE-2026-57221
MEDIUMRabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue metadata to unprivileged users
Title source: cnaDescription
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ does not perform authorization checks on passive queue.declare and exchange.declare AMQP 0-9-1 operations, allowing any authenticated user who can connect to a virtual host to enumerate queue and exchange names and read queue message and consumer counts. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
References (6)
Core 6
Core References
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https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2
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https://github.com/rabbitmq/rabbitmq-server/pull/16085
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https://github.com/rabbitmq/rabbitmq-server/pull/16090
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https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
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https://github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809ca34a2767962
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https://github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45be9423a2e83fc
Scores
CVSS v3
5.0
EPSS
0.0027
EPSS Percentile
18.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (5)
broadcom/rabbitmq_server
3.13.0 - 4.2.6
rabbitmq/rabbitmq-server
>= 3.13.0, < 3.13.15
rabbitmq/rabbitmq-server
>= 4.0.0, < 4.0.21
rabbitmq/rabbitmq-server
>= 4.1.0, < 4.1.11
rabbitmq/rabbitmq-server
>= 4.2.0, < 4.2.6
Published
Jul 10, 2026
Tracked Since
Jul 11, 2026