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CVE-2026-77408— RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow

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， 中的 函数将 AMQP shortstr 属性值的字节长度强制转换为 ，但未事先拒绝超过 255 字节的值。因此，如果应用程序接受过长的 CorrelationId、ReplyTo、MessageId、Expiration、UserId、AppId、ContentType、ContentEncoding 或 Type 值，可能会序列化一个回绕（wrap-around）的长度值以及一个被截断的

CVSS 9.1 · Critical

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
rabbitmq amqp091-go < 1.13.0 affected
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I. Basic Information for CVE-2026-77408

Vulnerability Information
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Vulnerability Title
RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, the writeShortstr function in write.go casts the byte length of AMQP shortstr property values to uint8 without first rejecting values longer than 255 bytes. An application that accepts an oversized CorrelationId, ReplyTo, MessageId, Expiration, UserId, AppId, ContentType, ContentEncoding, or Type value can therefore serialize a wrapped length and only a truncated prefix, while reporting no error. The resulting silent metadata corruption can break request and reply correlation, routing, tracing, and downstream message processing. 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:L/VI:H/VA:H/SC:L/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
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-2026-77408

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III. Intelligence Information for CVE-2026-77408

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Patches & Fixes for CVE-2026-77408 (2)

Vendor Advisories for CVE-2026-77408 (1)

Vendor Pages for CVE-2026-77408 (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-2026-77403 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-2026-77412 8.9 HIGH RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client
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-190

V. Comments for CVE-2026-77408

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