CVE-2026-57220

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547	Patch
https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e	Patch
https://github.com/rabbitmq/rabbitmq-server/pull/16171	Issue Tracking Patch
https://github.com/rabbitmq/rabbitmq-server/pull/16173	Issue Tracking Patch
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6	Release Notes
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q	Exploit Vendor Advisory
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-10 21:16

Updated : 2026-07-13 20:49

NVD link : CVE-2026-57220

Mitre link : CVE-2026-57220

CVE.ORG link : CVE-2026-57220

JSON object : View

Products Affected

broadcom

rabbitmq_server

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2026-57220", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57220", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-13T16:20:13.084964Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "rabbitmq", "product": "rabbitmq-server", "versions": [{"status": "affected", "version": ">= 4.2.0, < 4.2.6"}]}]}], "published": "2026-07-10T21:16:59.180", "references": [{"url": "https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/pull/16171", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/pull/16173", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "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."}], "lastModified": "2026-07-13T20:49:24.450", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "94C93722-7CEF-409C-B2BE-0AB1DC9D6DD1", "versionEndExcluding": "4.2.6"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}