CVE-2026-77409

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Source
https://cve.org/CVERecord?id=CVE-2026-77409
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77409.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-77409
Aliases
  • GHSA-wxx3-cj7g-w73j
Downstream
Published
2026-09-16T14:48:00Z
Modified
2026-09-20T11:30:40Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L CVSS Calculator
Summary
RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking
Details

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77409.json"
}
References

Affected packages

Git / github.com/rabbitmq/amqp091-go

Affected ranges

Type
GIT
Repo
https://github.com/rabbitmq/amqp091-go
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
5b0ccbb8d7bc3dfa18129d9b0f9256d656809494
Fixed
d26d57e952cc61554ea9c54bd676c8f40ed0d84d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.13.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.2.0
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.5.0
v1.6.0
v1.6.1
v1.6.1-rc.1
v1.6.1-rc.2
v1.7.0
v1.8.0
v1.8.1
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77409.json"