CVE-2026-66072

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Source

https://cve.org/CVERecord?id=CVE-2026-66072

Import Source

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

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-66072

Aliases

GHSA-48hm-chgv-398r

Downstream

Published

2026-09-23T20:13:13Z

Modified

2026-09-24T11:45:20Z

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":  [
                {
                    "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"
        }
    ]
}

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":  [
        {
            "introduced":  "4.2.0"
        },
        {
            "fixed":  "4.2.6"
        },
        {
            "introduced":  "4.3.0"
        },
        {
            "fixed":  "4.3.1"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

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/cve-osv-conversion/osv-output/CVE-2026-66072.json"