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CVE-2026-61547— rabbitmq-c: Heap Buffer Overflow in amqp_send_frame() When Serializing Oversized AMQP_FRAME_BODY

Quick assessment

Affected
alanxz rabbitmq-c
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

rabbitmq-c 是一个用于 RabbitMQ 的 C 语言 AMQP 客户端库。在 0.17.0 版本之前，当使用公开的 API 序列化过大的 时，rabbitmq-c 存在堆缓冲区溢出漏洞。该问题产生的原因是： 函数在将 字节的数据复制到连接输出缓冲区时，未验证该数据体片段是否适合已分配的帧缓冲区。若应用程序向 传递了过大的数据体帧，即可触发堆越界写入，导致进程崩溃和内存损坏。此问题已在 0.17.0 版本中修复。

AI Predicted 7.5 Difficulty: Easy
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I. Basic Information for CVE-2026-61547

Vulnerability Information
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Vulnerability Title
rabbitmq-c: Heap Buffer Overflow in amqp_send_frame() When Serializing Oversized AMQP_FRAME_BODY
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
alanxz rabbitmq-c < 0.17.0 -

II. Public POCs for CVE-2026-61547

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III. Intelligence Information for CVE-2026-61547

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Other References for CVE-2026-61547 (3)

IV. Related Vulnerabilities

Same product: rabbitmq-c
Same vendor: alanxz
Same weakness: CWE-787