CVE-2026-77403

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Source
https://cve.org/CVERecord?id=CVE-2026-77403
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77403.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-77403
Aliases
Downstream
Published
2026-09-16T14:36:19Z
Modified
2026-09-18T03:48:30Z
Severity
  • 8.9 (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:H CVSS Calculator
Summary
RabbitMQ amqp091-go: Denial of Service via Sub-Spec Frame Size Negotiation
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77403.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
2e0a919b89f337dbf58db2bb34ab206dac354a06
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-2026-77403.json"