CVE-2026-66072

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Source
https://cve.org/CVERecord?id=CVE-2026-66072
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-66072.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-66072
Aliases
Downstream
Published
2026-09-23T20:13:13Z
Modified
2026-10-22T10:30:55Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
RabbitMQ: Atom table exhaustion via stream `chunk_selector`
Details

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, get_chunk_selector/1 calls binary_to_atom on the raw client-supplied <<"chunk_selector">> property from post-auth subscribe and resolve_offset_spec frames, with no whitelist and no existing guard. An authenticated stream client with read access to any stream can crash the broker node. Preconditions include rabbitmq_stream plugin enabled Authenticated stream-protocol user with read access to at least one stream. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66072.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "3.13.0"
                        },
                        {
                            "fixed": "3.13.15"
                        },
                        {
                            "introduced": "4.0.0"
                        },
                        {
                            "fixed": "4.0.20"
                        },
                        {
                            "introduced": "4.1.0"
                        },
                        {
                            "fixed": "4.1.11"
                        }
                    ],
                    "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
8a56c37f099a7bf609a555de3f0ff8ed23964d20
Introduced
1929eeadf9b2bac12c5434fb56884ef27370580e
Fixed
49decca35e59d2cb774e5abd76412cee721308a5
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "4.2.0"
                },
                {
                    "fixed": "4.2.6"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "4.3.0"
                },
                {
                    "fixed": "4.3.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "v4.2.6",
            "range": [
                {
                    "fixed": "8a56c37f099a7bf609a555de3f0ff8ed23964d20"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "v4.3.1",
            "range": [
                {
                    "fixed": "49decca35e59d2cb774e5abd76412cee721308a5"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.3.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-66072.json"