rabbitmq Server up to 3.13.13/4.0.18/4.1.9/4.2.4 HTTP API read_complete_body information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in rabbitmq Server up to 3.13.13/4.0.18/4.1.9/4.2.4. This issue affects the function read_complete_body of the component HTTP API. This manipulation causes information disclosure. This vulnerability appears as CVE-2026-57212. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in rabbitmq Server up to 3.13.13/4.0.18/4.1.9/4.2.4. Affected by this vulnerability is the function read_complete_body of the component HTTP API. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-57212 since 06/24/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.13.14, 4.0.19, 4.1.10 or 4.2.5 eliminates this vulnerability.

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Productinfo

Vendor

• rabbitmq

Name

• Server

Version

• 3.13.0
• 3.13.1
• 3.13.2
• 3.13.3
• 3.13.4
• 3.13.5
• 3.13.6
• 3.13.7
• 3.13.8
• 3.13.9
• 3.13.10
• 3.13.11
• 3.13.12
• 3.13.13
• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8
• 4.1.9
• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4

CPE 2.3info

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CPE 2.2info

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