CVE-2026-57212

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.

• CWE-770

• https://github.com/rabbitmq/rabbitmq-server/commit/3976d148901bdfa82e1cd60b7a4534e073266ba5Patch
• https://github.com/rabbitmq/rabbitmq-server/commit/b8fc2ef7c50a2797d15e1ea7cf34f290032303bbPatch
• https://github.com/rabbitmq/rabbitmq-server/pull/15712Issue Tracking, Patch
• https://github.com/rabbitmq/rabbitmq-server/pull/15714Issue Tracking, Patch
• https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5Release Notes
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cmq-vp28-xqrjExploit, Vendor Advisory
• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cmq-vp28-xqrjExploit, Vendor Advisory

Published

Jul 10, 2026

Last Modified

Oct 25, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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