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CVE-2026-67408— RabbitMQ: Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service

Quick assessment

Affected
rabbitmq rabbitmq-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RabbitMQ 是一种消息和流式代理。在版本 4.1.0 至 4.3.3、4.2.9 和 4.1.11 中，存在一个与安全流管理相关的漏洞：允许低权限节点发起拒绝服务（DoS）攻击。 当 RabbitMQ 4.3.1 启用了 插件时，它允许经过身份验证且能够访问目标虚拟主机（vhost）的管理用户向 接口发送请求。如果请求体中包含 字段，处理程序会解析攻击者控制的逗号分隔字符串，并在检查用户是否有权限配置所生成的流之前，先构建完整的流名称列表。因此，一个拥有 vhost 访问权限但无配置、写入或读取权限的低权限管

CVSS 7.1 · High EPSS 0.34% · P25
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I. Basic Information for CVE-2026-67408

Vulnerability Information
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Vulnerability Title
RabbitMQ: Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9, and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with rabbitmqstreammanagement enabled accepts PUT /api/stream/super-streams/{vhost}/{name} requests from an authenticated management user that can access the target vhost. When the request body contains the binding-keys field, the handler parses the attacker-controlled comma-separated string and builds the full stream-name list before checking whether the user has permission to configure the resulting streams. A low-privileged management user with vhost access but no configure, write, or read permission can therefore force large transient allocations before the resource permission check. In a 768 MB memory-limited container, one HTTP PUT with about 4.5 MB of JSON body killed the RabbitMQ container with Docker state exited true An authenticated low-privileged management user can kill a memory-limited RabbitMQ node with one HTTP This issue is fixed in versions 4.3.3, 4.2.9, and 4.1.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
rabbitmq rabbitmq-server >= 4.3.0, < 4.3.3 -

II. Public POCs for CVE-2026-67408

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III. Intelligence Information for CVE-2026-67408

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Other References for CVE-2026-67408 (5)

Same Patch Batch · rabbitmq · 2026-09-25 · 28 CVEs total

CVE-2026-67236 8.2 HIGH RabbitMQ: Plaintext username:password stored in an insecure cookie after successful POST /
CVE-2026-67409 8.2 HIGH RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Au
CVE-2026-67410 8.2 HIGH RabbitMQ: OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint
CVE-2026-67239 7.6 HIGH RabbitMQ: Stored XSS via TLS peer-certificate DN in stream-management UI
CVE-2026-67237 7.5 HIGH RabbitMQ: Reflected XSS via the OAuth bootstrap JS endpoint
CVE-2026-67419 7.1 HIGH RabbitMQ: Consecutive topic wildcards cause combinatorial routing work
CVE-2026-67226 6.9 MEDIUM RabbitMQ: Admin-only atom exhaustion: PUT /api/users tags list
CVE-2026-61837 6.3 MEDIUM RabbitMQ: AMQP 1.0 management `GET /bindings` exposes full binding topology to any authent
CVE-2026-67242 6.3 MEDIUM RabbitMQ: OAuth2 is_integer(Exp) guard skips token-expiry checks for float exp
CVE-2026-67230 6.3 MEDIUM RabbitMQ: Web-STOMP unbounded pre-auth accumulation
CVE-2026-67223 6.3 MEDIUM RabbitMQ: LDAP DN injection via unescaped substitution
CVE-2026-67225 6.3 MEDIUM RabbitMQ: Stream-protocol frame length never validated against frame_max
CVE-2026-66073 6.0 MEDIUM RabbitMQ: Atom table exhaustion via management API node field
CVE-2026-66071 6.0 MEDIUM RabbitMQ: Atom exhaustion: OAuth2 JWT tag: scope values
CVE-2026-67413 6.0 MEDIUM RabbitMQ: Authenticated RabbitMQ JMS Topic Selector Users Can Consume Broker CPU with an U
CVE-2026-67412 6.0 MEDIUM RabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message acces
CVE-2026-67411 6.0 MEDIUM RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass
CVE-2026-67222 5.9 MEDIUM RabbitMQ: list_to_atom on auth_mechanism URI tokens in amqp_client
CVE-2026-67227 5.9 MEDIUM RabbitMQ: Atom exhaustion: to_atom on global-parameter :name
CVE-2026-67415 5.9 MEDIUM RabbitMQ: Shovel Management Atom Exhaustion Allows Persistent Broker-Wide Denial of Servic

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: rabbitmq-server
Same vendor: rabbitmq
Same weakness: CWE-400

V. Comments for CVE-2026-67408

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