CVE-2026-77409: CWE-770: Allocation of Resources Without Limits or Throttling in rabbitmq amqp091-go
CVE-2026-77409 is a high-severity vulnerability in the RabbitMQ amqp091-go client prior to version 1.13.0. It involves allocation of resources without limits or throttling, where synchronous sending of publisher confirmations and other events to application channels can cause blocking if the listener channel is unbuffered, full, or not drained promptly. This can lead to connection stalls, missed heartbeats, deadlocks, and disconnections. The issue is fixed in version 1.13.0.
AI Analysis
Technical Summary
RabbitMQ amqp091-go versions before 1.13.0 have a resource allocation flaw (CWE-770) in the synchronous dispatch of publisher confirmations, flow-control events, consumer cancellations, returned messages, NotifyConfirm events, and connection block notifications to application-provided channels. If these listener channels are unbuffered, full, or not drained promptly, the single reader goroutine blocks, halting processing of frames, acknowledgments, deliveries, and heartbeats. This can cause broker-driven event bursts to stall connections, miss heartbeats, deadlock, and disconnect. The vulnerability is resolved in version 1.13.0.
Potential Impact
Exploitation of this vulnerability can cause RabbitMQ client connections to stall or deadlock, resulting in missed heartbeats and disconnections. This disrupts message processing and can degrade application availability relying on the amqp091-go client.
Mitigation Recommendations
Upgrade to RabbitMQ amqp091-go version 1.13.0 or later, where this issue is fixed. No other mitigation or workaround is indicated.
CVE-2026-77409: CWE-770: Allocation of Resources Without Limits or Throttling in rabbitmq amqp091-go
Description
CVE-2026-77409 is a high-severity vulnerability in the RabbitMQ amqp091-go client prior to version 1.13.0. It involves allocation of resources without limits or throttling, where synchronous sending of publisher confirmations and other events to application channels can cause blocking if the listener channel is unbuffered, full, or not drained promptly. This can lead to connection stalls, missed heartbeats, deadlocks, and disconnections. The issue is fixed in version 1.13.0.
CVSS v4.0
Score 8.2high
Affected software
rabbitmq
amqp091-go
pkg:github/rabbitmq/amqp091-goRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
RabbitMQ amqp091-go versions before 1.13.0 have a resource allocation flaw (CWE-770) in the synchronous dispatch of publisher confirmations, flow-control events, consumer cancellations, returned messages, NotifyConfirm events, and connection block notifications to application-provided channels. If these listener channels are unbuffered, full, or not drained promptly, the single reader goroutine blocks, halting processing of frames, acknowledgments, deliveries, and heartbeats. This can cause broker-driven event bursts to stall connections, miss heartbeats, deadlock, and disconnect. The vulnerability is resolved in version 1.13.0.
Potential Impact
Exploitation of this vulnerability can cause RabbitMQ client connections to stall or deadlock, resulting in missed heartbeats and disconnections. This disrupts message processing and can degrade application availability relying on the amqp091-go client.
Mitigation Recommendations
Upgrade to RabbitMQ amqp091-go version 1.13.0 or later, where this issue is fixed. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-20T19:55:27.024Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaaaf7355bf5e2cf5c3ac72
Added to database: 09/16/2026, 15:02:11 UTC
Last enriched: 09/16/2026, 15:16:35 UTC
Last updated: 09/16/2026, 15:52:50 UTC
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.