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CVE-2026-79921— amqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload

Quick assessment

Affected
rabbitmq amqp091-go
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

amqp091-go 是一个 Go 语言的 AMQP 0.9.1 客户端。在 1.13.0 版本之前，一个被攻陷或恶意的 AMQP 经纪（broker）可以强制客户端为超出协商的 限制的内容正文帧分配资源并处理这些帧。这可能导致意外的内存消耗或应用层拒绝服务（DoS），从而绕过协议内置的分帧约束。1.13.0 版本包含了修复。目前已知没有可用的临时解决方案。

CVSS 8.9 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-79921

Vulnerability Information
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Vulnerability Title
amqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload
Source: CVE Program / CVE List V5
Vulnerability Description
amqp091-go is a Go AMQP 0.9.1 client. Before version 1.13.0, a compromised or malicious AMQP broker can force the client to allocate resources for and process content body frames that exceed the negotiated frame_max limit. This can lead to unexpected memory consumption or application-layer denial of service (DoS), bypassing the protocol's built-in framing constraints. Version 1.13.0 contains a fix. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
rabbitmq amqp091-go < 1.13.0 -

II. Public POCs for CVE-2026-79921

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8724 chars
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III. Intelligence Information for CVE-2026-79921

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Patches & Fixes for CVE-2026-79921 (2)

Vendor Advisories for CVE-2026-79921 (1)

Vendor Pages for CVE-2026-79921 (1)

IV. Related Vulnerabilities

Same vendor: rabbitmq
Same weakness: CWE-770

V. Comments for CVE-2026-79921

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