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CVE-2026-77412— RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client

Quick assessment

Affected
rabbitmq amqp091-go
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 的 amqp091-go 是一个 Go 语言的 AMQP 0.9.1 客户端。在 1.13.0 版本之前，read.go 文件中的 readField 函数将 AMQP 字节数组字段（类型标签为 x）的长度读取到带符号的 int32 中，并直接将该值传递给 make 函数以分配字段缓冲区。恶意或受入侵的 broker 可以编码诸如 0xFFFFFFFF 这样的值，该值会被解释为 -1，从而导致“len out of range”运行时恐慌（panic）。此恐慌会逃逸出网络读取协程，并终止客户端进程

CVSS 8.9 · High EPSS 0.52% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
rabbitmq amqp091-go < 1.13.0 affected
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I. Basic Information for CVE-2026-77412

Vulnerability Information
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Vulnerability Title
RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, readField in read.go reads the length of an AMQP byte-array field with type tag x into a signed int32 and passes the value directly to make when allocating the field buffer. A malicious or compromised broker can encode a value such as 0xFFFFFFFF, which becomes -1 and causes a len out of range runtime panic. The panic escapes the network reader goroutine and terminates the client process, including during connection.start server properties or message header table parsing. This issue is fixed in version 1.13.0.
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
数值类型间的不正确转换
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-2026-77412

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III. Intelligence Information for CVE-2026-77412

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Patches & Fixes for CVE-2026-77412 (2)

Vendor Advisories for CVE-2026-77412 (1)

Vendor Pages for CVE-2026-77412 (1)

Same Patch Batch · rabbitmq · 2026-09-16 · 11 CVEs total

CVE-2026-77411 9.5 CRITICAL RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow i
CVE-2026-77405 9.4 CRITICAL RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser
CVE-2026-77408 9.1 CRITICAL RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Over
CVE-2026-77403 8.9 HIGH RabbitMQ amqp091-go: Denial of Service via Sub-Spec Frame Size Negotiation
CVE-2026-77410 8.9 HIGH RabbitMQ amqp091-go: Resource Exhaustion (OOM) via Unbounded Body Buffer Allocation
CVE-2026-77404 8.7 HIGH RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter
CVE-2026-75516 8.7 HIGH RabbitMQ Java client: Frame-level OOM: Math.min(maxInboundMessageBodySize, 0) defeats fram
CVE-2026-77409 8.2 HIGH RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking
CVE-2026-77406 8.2 HIGH RabbitMQ amqp091-go: Consumer Message Flooding via Signed-to-Unsigned Integer Casting in Q
CVE-2026-77407 7.0 HIGH RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Struc

IV. Related Vulnerabilities

Same product: amqp091-go
Same vendor: rabbitmq
Same weakness: CWE-681