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CVE-2026-57212— RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_size

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 rabbitmq-server是RabbitMQ组织的消息队列中间件。 rabbitmq-server存在资源管理错误漏洞，该漏洞源于rabbitmq_management HTTP API在读取完整JSON体时最终组合大小检查缺失，导致接受超大的有效JSON体。以下版本受到影响：3.13.14之前版本、4.0.19之前版本、4.1.10之前版本和4.2.5之前版本。

AI Predicted 5.3 Difficulty: Easy EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
rabbitmq rabbitmq-server >= 4.2.0, < 4.2.5 affected
>= 4.1.0, < 4.1.10 affected
>= 4.0.0, < 4.0.19 affected
>= 3.13.0, < 3.13.14 affected
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I. Basic Information for CVE-2026-57212

Vulnerability Information
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Vulnerability Title
RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_size
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. Prior to 3.13.14, 4.0.19, 4.1.10, and 4.2.5, the rabbitmq_management HTTP API accepts oversized valid JSON bodies on with_decode and direct_request paths because read_complete_body checks the accumulated size before the final chunk but not the final combined size. This issue is fixed in versions 3.13.14, 4.0.19, 4.1.10, and 4.2.5.
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:L
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
Vulnerability Title
rabbitmq-server 资源管理错误漏洞
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存在资源管理错误漏洞，该漏洞源于rabbitmq_management HTTP API在读取完整JSON体时最终组合大小检查缺失，导致接受超大的有效JSON体。以下版本受到影响：3.13.14之前版本、4.0.19之前版本、4.1.10之前版本和4.2.5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, < 4.2.5 -

II. Public POCs for CVE-2026-57212

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III. Intelligence Information for CVE-2026-57212

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Patches & Fixes for CVE-2026-57212 (3)

Vendor Advisories for CVE-2026-57212 (1)

Vendor Pages for CVE-2026-57212 (1)

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

CVE-2026-57219 8.7 HIGH RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint
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-2026-57215 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-770

V. Comments for CVE-2026-57212

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