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CVE-2026-57221— RabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue metadata to unprivileged users

AI Predicted 5.3 Difficulty: Easy EPSS 0.41% · P34

Possible ATT&CK Techniques 1AI

T1083 · File and Directory Discovery

Affected Version Matrix 4

VendorProductVersion RangeStatus
rabbitmqrabbitmq-server>= 4.2.0, < 4.2.6affected
>= 4.1.0, < 4.1.11affected
>= 4.0.0, < 4.0.21affected
>= 3.13.0, < 3.13.15affected
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I. Basic Information for CVE-2026-57221

Vulnerability Information
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Vulnerability Title
RabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue metadata to unprivileged users
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
rabbitmq rabbitmq-server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RabbitMQ rabbitmq-server是RabbitMQ组织的消息队列中间件。 RabbitMQ rabbitmq-server存在授权问题漏洞，该漏洞源于未对被动queue.declare和exchange.declare AMQP 0-9-1操作执行授权检查，允许任何能连接到虚拟主机的已认证用户枚举队列和交换器名称，并读取队列消息和消费者计数。以下版本受到影响：3.13.15之前版本、4.0.20之前版本、4.1.11之前版本和4.2.6之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
rabbitmqrabbitmq-server >= 4.2.0, < 4.2.6 -

II. Public POCs for CVE-2026-57221

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III. Intelligence Information for CVE-2026-57221

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Patches & Fixes for CVE-2026-57221 (4)

Vendor Advisories for CVE-2026-57221 (1)

Vendor Pages for CVE-2026-57221 (1)

Same Patch Batch · rabbitmq · 2026-07-10 · 11 CVEs total

CVE-2026-572198.7 HIGHRabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint
CVE-2026-572207.5 HIGHRabbitMQ: Stream listener does not enforce configured frame-size limit during authenticati
CVE-2026-572166.8 MEDIUMRabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote gu
CVE-2026-572116.5 MEDIUMRabbitMQ: UNC SSRF affecting the management UI on Windows
CVE-2026-57218RabbitMQ: AMQP 0-9-1 in combination with OAuth 2: consumer persistence can lead to post-re
CVE-2026-57214RabbitMQ: Stored XSS in RabbitMQ management UI
CVE-2026-57213RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering
CVE-2026-57217RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
CVE-2026-57212RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_s
CVE-2026-57215RabbitMQ: Direct-reply-to binding persistence can lead to unauthorized reply-channel injec

IV. Related Vulnerabilities

Same product: rabbitmq-server
Same vendor: rabbitmq
Same weakness: CWE-862

V. Comments for CVE-2026-57221

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