AMQP 0.9.1 Client Vulnerability in RabbitMQ
CVE-2026-77412

8.9HIGH

Key Information:

Vendor

RabbitMQ

Status
AMQp091-go
Vendor
CVE Published:
16 September 2026

What is CVE-2026-77412?

The RabbitMQ amqp091-go client for Go contains a vulnerability where the readField function mishandles the allocation of byte-array fields. When processing data from a compromised broker, a crafted value can lead to an integer overflow, resulting in a runtime panic. This panic interrupts the active network reader goroutine, which may crash the client, affecting its ability to process server properties or message headers. The issue has been resolved in version 1.13.0.

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/344
x_refsource_MISC
https://github.com/rabbitmq/amqp091-go/commit/669b42bf7b1...
x_refsource_MISC

CVSS V4

Score:
8.9
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.