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.

CVSS 4.0

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

CVSS 3.1

7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-25)

CWE

CWE-770

Published

2026-07-10

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• broadcom:rabbitmq_server

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

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