Status: UPDATED
| Advisory ID: CVE-2026-77403
Key Details
| CVE | CVE-2026-77403 |
| CVSS Score / Version | 8.9 (High) / CVSS v4.0 |
| Updated | 2026-09-23 |
| Affected products | rabbitmq amqp091-go |
| Classified as | CWE-770 (Allocation of Resources Without Limits or Throttling) |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0. (NVD)
What to Do
Monitor rabbitmq's web page for any future patch releases.
References