Input validation error in RabbitMQ - CVE-2026-57212

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Main Vulnerability Database Vulnerabilities #VU137214

Input validation error in RabbitMQ - CVE-2026-57212

Published: July 9, 2026


Vulnerability identifier: #VU137214
CSH Severity: Medium
CVSS v4 BT: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2026-57212
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the management HTTP API when handling oversized request bodies. A remote attacker can send a specially crafted request body to cause a denial of service.


Affected software

RabbitMQ
Fedora
rabbitmq-server

How to mitigate CVE-2026-57212

Install security update from vendor's website.

RabbitMQ - update to 3.13.14
rabbitmq-server - update to 4.0.9-5.fc43

External References

Related Security Bulletins