Vulnerability details

CVE-2026-61547

alanxz rabbitmq-c

rabbitmq-c: Heap Buffer Overflow in amqp_send_frame() When Serializing Oversized AMQP_FRAME_BODY

CVSS 3.0

9.8Critical

Official description

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to version 0.17.0, a heap buffer overflow exists in rabbitmq-c when the public amqp_send_frame() API is used to serialize an oversized AMQP_FRAME_BODY. The issue occurs because amqp_frame_to_bytes() copies frame.payload.body_fragment.len bytes into the connection outbound buffer without validating that the body fragment fits within the allocated frame buffer. An application that passes an oversized body frame to amqp_send_frame() can trigger a heap out-of-bounds write, resulting in process crash and memory corruption. This issue has been patched in version 0.17.0.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
alanxz	rabbitmq-c	< 0.17.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-hfjv-vcp3-39wh x_refsource_CONFIRM
https://github.com/alanxz/rabbitmq-c/pull/892 x_refsource_MISC
https://github.com/alanxz/rabbitmq-c/releases/tag/v0.17.0 x_refsource_MISC

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Details

Published: 2026-11-10
Last updated: 2026-11-10
State: Published
Assigner (CNA): GitHub_M
Kolun priority: 15 · Low

Exploit prediction (EPSS)

No EPSS score has been published for this CVE yet.

Weaknesses (CWE)

CWE-787
Out-of-bounds Write