Denial of Service Risk in RabbitMQ AMQP Client by RabbitMQ
CVE-2026-77411

9.5CRITICAL

Key Information:

Vendor

RabbitMQ

Status
AMQp091-go
Vendor
CVE Published:
16 September 2026

What is CVE-2026-77411?

A flaw in RabbitMQ's amqp091-go client permits a malicious broker to send oversized 'longstr' values in a table field. This causes subsequent AMQP parsing to desynchronize, allowing attacker-controlled data to interfere with the parsing process. As a result, the integrity and availability of connections can be compromised. This vulnerability was addressed in version 1.13.0, which ensures proper error handling and parsing logic.

Affected Version(s)

amqp091-go < 1.13.0

References

https://github.com/rabbitmq/amqp091-go/security/advisorie...
x_refsource_CONFIRM
https://github.com/rabbitmq/amqp091-go/pull/347
x_refsource_MISC
https://github.com/rabbitmq/amqp091-go/commit/143c1ace5fa...
x_refsource_MISC

CVSS V4

Score:
9.5
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.