Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 21.1%
CVSS Severity
References
- https://github.com/rabbitmq/rabbitmq-server/commit/3976d148901bdfa82e1cd60b7a4534e073266ba5
- https://github.com/rabbitmq/rabbitmq-server/commit/b8fc2ef7c50a2797d15e1ea7cf34f290032303bb
- https://github.com/rabbitmq/rabbitmq-server/pull/15712
- https://github.com/rabbitmq/rabbitmq-server/pull/15714
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cmq-vp28-xqrj