CVE-2026-67225
Full vulnerability record from the local CVENow database.
Description
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote client could therefore cause excessive memory pressure and denial of service by declaring an oversized frame. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
Severity
MEDIUM
CVSS score
6.3
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-09-25 17:17:10.827000
Last modified
2026-10-20 13:37:31.533000
View original CVE JSON
{
"id": "CVE-2026-67225",
"sourceIdentifier": "[email protected]",
"published": "2026-09-25T17:17:10.827",
"lastModified": "2026-10-20T13:37:31.533",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's declared length before buffering the frame. With the stream plugin enabled, a remote client could therefore cause excessive memory pressure and denial of service by declaring an oversized frame. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "rabbitmq",
"product": "rabbitmq-server",
"versions": [
{
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"status": "affected"
},
{
"version": ">= 4.0.0, < 4.0.20",
"status": "affected"
},
{
"version": ">= 4.1.0, < 4.1.11",
"status": "affected"
},
{
"version": ">= 4.2.0, < 4.2.6",
"status": "affected"
}
]
}
]
}
],
"metrics": {
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"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
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"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
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"cvssMetricV31": [
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"type": "Primary",
"cvssData": {
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"scope": "UNCHANGED",
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"ssvcV203": [
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"id": "CVE-2026-67225",
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"role": "CISA Coordinator",
"version": "2.0.3"
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"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-770"
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"configurations": [
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"cpeMatch": [
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"references": [
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"url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6",
"source": "[email protected]",
"tags": [
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"Patch"
]
},
{
"url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-c8c4-gvv4-8j3q",
"source": "[email protected]",
"tags": [
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]
}
]
}