CVE-2026-66074

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Source

https://cve.org/CVERecord?id=CVE-2026-66074

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66074.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-66074

Aliases

GHSA-rg5q-vcgf-rfh7

Downstream

Published

2026-09-23T20:45:28Z

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: ReDoS via management API ?name= filter

Details

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, match_value/3 passes the user-supplied ?name= regular expression to re:run with no match_limit option, and executes it once per resource in the result set. OTP's default 10M match_limit caps each call at roughly 100-200ms, but the regex runs once per resource in the result set. With a large set, for example 5000 queues at 150ms each, a single request consumes 12 or more minutes of CPU. Parallel requests saturate the schedulers. The use_regex=true option is a supported feature on list endpoints, so this path is reachable through normal API use. Preconditions include Any user with the management tag can exploit this.. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1333"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66074.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

Database specific

Show details

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

Affected versions

v4.*

v4.2.0

v4.2.1

v4.2.2

v4.2.3

v4.2.4

v4.2.5

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66074.json"