CVE-2026-67230— RabbitMQ: Web-STOMP unbounded pre-auth accumulation
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 是一种消息传递和流处理代理。在版本 3.13.0 至 3.13.15、4.0.20、4.1.11 和 4.2.6 之间，Web STOMP WebSocket 处理器在身份验证之前未强制执行 max_frame_size 和 login_timeout 限制。这使得未经身份验证的客户端能够通过发送低速的小帧流来维持连接，并积累无限制的预认证状态。要利用此漏洞，必须启用 rabbitmq_web_stomp 插件，且到达受影响路径无需身份验证。该问题已在版本 3.13.15、4.0.20、4.1.1
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I. Basic Information for CVE-2026-67230
Vulnerability Information
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Vulnerability Title
RabbitMQ: Web-STOMP unbounded pre-auth accumulation
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the Web STOMP WebSocket handler enforced neither max_frame_size nor login_timeout before authentication, allowing an unauthenticated client to keep a connection alive with a slow stream of small frames and accumulate unbounded pre-authentication state. The rabbitmq_web_stomp plugin must be enabled, and no authentication is required to reach the vulnerable path. 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:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| rabbitmq | rabbitmq-server | >= 4.2.0, < 4.2.6 | - |
|
II. Public POCs for CVE-2026-67230
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-67230 (1)
Other References for CVE-2026-67230 (4)
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-2026-67223 | 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 → →
IV. Related Vulnerabilities
Same product: rabbitmq-server
-
CVE-2026-67420
RabbitMQ OAuth credential refresh retains revoked runtime ta -
CVE-2026-67419
RabbitMQ: Consecutive topic wildcards cause combinatorial ro -
CVE-2026-67421
RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth -
CVE-2026-67408
RabbitMQ: Stream Management Super-Stream Binding Keys Alloca -
CVE-2026-67406
RabbitMQ: Federation and Shovel Gen-Servers Lack format_stat
Same vendor: rabbitmq
-
CVE-2026-67420
RabbitMQ OAuth credential refresh retains revoked runtime ta -
CVE-2026-67419
RabbitMQ: Consecutive topic wildcards cause combinatorial ro -
CVE-2026-67421
RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth -
CVE-2026-67408
RabbitMQ: Stream Management Super-Stream Binding Keys Alloca -
CVE-2026-67406
RabbitMQ: Federation and Shovel Gen-Servers Lack format_stat
Same weakness: CWE-770
-
CVE-2026-82936
Denial of Service in mH-DEVELOPER -
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Mint HTTP/2 client buffers oversized frames up to 16 MiB bef -
CVE-2026-91043
HPACK-indexed cookie fields in Mint HTTP/2 responses bypass -
CVE-2026-100660
Netty before 4.2.18.Final QpackEncoder Unbounded Memory Rete -
CVE-2026-100658
Netty before 4.1.138.Final Denial of Service via WebSocketSe
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