CVE-2026-57220 (GCVE-0-2026-57220)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:19 – Updated: 2026-07-10 20:19
VLAI
Title
RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS
Summary
RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
rabbitmq rabbitmq-server Affected: >= 4.2.0, < 4.2.6
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  "containers": {
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        {
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          "vendor": "rabbitmq",
          "versions": [
            {
              "status": "affected",
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            }
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          "value": "RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-10T20:19:23.162Z",
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        "shortName": "GitHub_M"
      },
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          "tags": [
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        },
        {
          "name": "https://github.com/rabbitmq/rabbitmq-server/pull/16171",
          "tags": [
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          "url": "https://github.com/rabbitmq/rabbitmq-server/pull/16171"
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          "tags": [
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        },
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          "name": "https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e",
          "tags": [
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          "url": "https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e"
        },
        {
          "name": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6"
        }
      ],
      "source": {
        "advisory": "GHSA-f364-87q5-j35q",
        "discovery": "UNKNOWN"
      },
      "title": "RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth\u0027d mem-exhaust DoS"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57220",
    "datePublished": "2026-07-10T20:19:23.162Z",
    "dateReserved": "2026-06-24T02:21:33.810Z",
    "dateUpdated": "2026-07-10T20:19:23.162Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-07-11",
      "epss": "0.00429",
      "percentile": "0.34622"
    },
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  }
}



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