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CVE-2026-57219— RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations

Quick assessment

Affected
rabbitmq rabbitmq-server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RabbitMQ rabbitmq-server是RabbitMQ组织的消息队列中间件。 rabbitmq-server存在信息泄露漏洞，该漏洞源于过时的GET /api/auth端点可泄露OAuth 2客户端密钥，导致未经验证的调用者获取凭据。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。

CVSS 8.7 · High EPSS 2.84% · P86

Public Exploits 1

Nuclei · 1 CVE-2026-57219.yaml [template]

Affected Version Matrix 4

VendorProduct Version RangeStatus
rabbitmq rabbitmq-server >= 4.2.0, < 4.2.6 affected
>= 4.1.0, < 4.1.11 affected
>= 4.0.0, < 4.0.21 affected
>= 3.13.0, < 3.13.15 affected
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I. Basic Information for CVE-2026-57219

Vulnerability Information
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Vulnerability Title
RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations
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, the obsolete GET /api/auth endpoint can disclose the OAuth 2 client secret on RabbitMQ installations configured with management.oauth_client_secret, exposing credentials to unauthenticated callers when the management plugin and that OAuth configuration are enabled. 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:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
rabbitmq-server 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RabbitMQ rabbitmq-server是RabbitMQ组织的消息队列中间件。 rabbitmq-server存在信息泄露漏洞，该漏洞源于过时的GET /api/auth端点可泄露OAuth 2客户端密钥，导致未经验证的调用者获取凭据。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

Vendor Product Affected Versions CPE Subscribe
rabbitmq rabbitmq-server >= 4.2.0, < 4.2.6 -

II. Public POCs for CVE-2026-57219

# POC Description Source Link Shenlong Link
1 RabbitMQ < 3.13.15, 4.0.20, 4.1.11, and 4.2.6 contains an information disclosure caused by the obsolete GET /api/auth endpoint exposing OAuth 2 client secrets when management.oauth_client_secret is configured, letting unauthenticated attackers access sensitive credentials, exploit requires management plugin and OAuth configuration enabled. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-57219.yaml POC Details
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8234 chars
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III. Intelligence Information for CVE-2026-57219

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Patches & Fixes for CVE-2026-57219 (4)

Vendor Advisories for CVE-2026-57219 (1)

Vendor Pages for CVE-2026-57219 (1)

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

CVE-2026-57220 7.5 HIGH RabbitMQ: Stream listener does not enforce configured frame-size limit during authenticati
CVE-2026-57216 6.8 MEDIUM RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote gu
CVE-2026-57211 6.5 MEDIUM RabbitMQ: UNC SSRF affecting the management UI on Windows
CVE-2026-57218 RabbitMQ: AMQP 0-9-1 in combination with OAuth 2: consumer persistence can lead to post-re
CVE-2026-57214 RabbitMQ: Stored XSS in RabbitMQ management UI
CVE-2026-57213 RabbitMQ: Stored XSS federation management plugin via unsanitized consumer_tag rendering
CVE-2026-57217 RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
CVE-2026-57212 RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_s
CVE-2026-57215 RabbitMQ: Direct-reply-to binding persistence can lead to unauthorized reply-channel injec
CVE-2026-57221 RabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue

IV. Related Vulnerabilities

Same product: rabbitmq-server
Same vendor: rabbitmq
Same weakness: CWE-200

V. Comments for CVE-2026-57219

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