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CVE-2026-67237— RabbitMQ: Reflected XSS via the OAuth bootstrap JS endpoint

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 是一个消息与流处理代理。在版本 4.2.0 至 4.2.8（不含 4.2.8 之后的修复版本）以及 4.3.2 之前， 函数会从 HTTP 请求的 头或 Cookie 中获取 OAuth 的 Bearer Token，并将其直接嵌入到 OAuth 引导用的 JavaScript 代码中，而未进行适当的转义处理。这使得攻击者可以通过构造恶意的 Token 内容，在管理 UI 的原始域上下文中执行 JavaScript 代码。 该漏洞端点在未进行身份验证前即可访问，但仅在配置项 设置为 时才暴露。通过

CVSS 7.5 · High EPSS 0.48% · P39
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I. Basic Information for CVE-2026-67237

Vulnerability Information
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Vulnerability Title
RabbitMQ: Reflected XSS via the OAuth bootstrap JS endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
rabbitmq rabbitmq-server >= 4.2.0, < 4.2.8 -

II. Public POCs for CVE-2026-67237

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III. Intelligence Information for CVE-2026-67237

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Other References for CVE-2026-67237 (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-2026-67408 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-2026-66073 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-79

V. Comments for CVE-2026-67237

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