CVE-2026-67412

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Source
https://cve.org/CVERecord?id=CVE-2026-67412
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67412.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-67412
Aliases
Downstream
Published
2026-09-25T16:20:13Z
Modified
2026-10-22T10:30:48Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N CVSS Calculator
Summary
RabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message access
Details

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18, Federation upstream in RabbitMQ skips vhost authorization allowing cross-vhost message access. what the bug lets you do. A policymaker on one vhost reads and drains messages out of another vhost it has no permission on. With the default ack-mode the source messages are consumed (deleted), not copied. Why that should not 1. Federation validates the upstream URI without any vhost-access Cross-vhost message read/drain from a per-vhost policymaker, breaking vhost tenancy This issue is fixed in versions 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67412.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "4.1.0"
                        },
                        {
                            "fixed": "4.1.14"
                        },
                        {
                            "introduced": "4.0.0"
                        },
                        {
                            "fixed": "4.0.24"
                        },
                        {
                            "introduced": "3.13.0"
                        },
                        {
                            "fixed": "3.13.18"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/rabbitmq/rabbitmq-server

Affected ranges

Type
GIT
Repo
https://github.com/rabbitmq/rabbitmq-server
Events
Introduced
95c501fbad76c66156346cf364d158d6e30aa4d9
Fixed
47d6d6457c7d1a440daed643cb7d76bba313e79c
Introduced
1929eeadf9b2bac12c5434fb56884ef27370580e
Fixed
1d284b2d2a1e2f845ad22b0d5ee38ec372d50802
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "4.2.0"
                },
                {
                    "fixed": "4.2.9"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "4.3.0"
                },
                {
                    "fixed": "4.3.3"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "original_tag": "v4.2.9",
            "range": [
                {
                    "fixed": "47d6d6457c7d1a440daed643cb7d76bba313e79c"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "v4.3.3",
            "range": [
                {
                    "fixed": "1d284b2d2a1e2f845ad22b0d5ee38ec372d50802"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.2.6
v4.2.7
v4.2.8
v4.3.0
v4.3.1
v4.3.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67412.json"