CVE-2026-67415— RabbitMQ: Shovel Management Atom Exhaustion Allows Persistent Broker-Wide 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 是一款消息和流式传输代理（broker）。在 4.2.0 至 4.2.9 版本以及 4.3.3 之前的版本中，Shovel 的参数字符解析器在限制参数范围或检查固定允许列表之前，会将攻击者可控的运行时参数值转换为非垃圾回收的 Erlang 原子（atoms）。利用此漏洞需要满足以下条件：具备对管理 HTTP API 的网络访问权限；拥有同时带有 management 和 policymaker 标签的有效凭证；在某个虚拟主机（vhost）上具备设置 Shovel 运行时参数的权限；并且启用了 ra
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I. Basic Information for CVE-2026-67415
Vulnerability Information
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Vulnerability Title
RabbitMQ: Shovel Management Atom Exhaustion Allows Persistent Broker-Wide Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, the Shovel parameter parser converted attacker-controlled runtime parameter values into non-garbage-collected Erlang atoms before bounding them or checking a fixed allowlist. Exploitation requires network access to the Management HTTP API, valid credentials with both the management and policymaker tags, permission to set Shovel runtime parameters on a vhost, and the rabbitmq_shovel and rabbitmq_shovel_management plugins to be enabled. The attacker can exhaust the node-wide atom table and deny service, and malicious parameters are stored durably and reparsed when workers start, so atom pressure can recur after restart without a live attacker connection. This issue is fixed in versions 4.2.9 and 4.3.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/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-2026-67415
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-67415 (3)
-
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3 x_refsource_MISC
-
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 x_refsource_MISC
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-2026-67408 | 7.1 HIGH | RabbitMQ: Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node |
| 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-2026-67411 | 6.0 MEDIUM | RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass |
| CVE-2026-66073 | 6.0 MEDIUM | RabbitMQ: Atom table exhaustion via management API node field |
| CVE-2026-67412 | 6.0 MEDIUM | RabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message acces |
| CVE-2026-67413 | 6.0 MEDIUM | RabbitMQ: Authenticated RabbitMQ JMS Topic Selector Users Can Consume Broker CPU with an U |
| CVE-2026-66071 | 6.0 MEDIUM | RabbitMQ: Atom exhaustion: OAuth2 JWT tag: scope values |
| 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 |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: rabbitmq-server
-
CVE-2026-67420
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Same vendor: rabbitmq
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Same weakness: CWE-400
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