CVE-2026-13074
Full vulnerability record from the local CVENow database.
Description
An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.
Severity
MEDIUM
CVSS score
6.9
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-22 20:16:46.057000
Last modified
2026-10-24 13:10:00.147000
View original CVE JSON
{
"id": "CVE-2026-13074",
"sourceIdentifier": "[email protected]",
"published": "2026-07-22T20:16:46.057",
"lastModified": "2026-10-24T13:10:00.147",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability."
},
{
"lang": "es",
"value": "Un cliente remoto no autenticado puede causar un consumo excesivo de CPU en un servidor MongoDB al enviar una combinación específica de parámetros al comando ’hello’ awaitable en modo ’exhaust’. El manejo por parte del servidor de esta combinación resulta en un bucle de respuesta que omite la limitación normal, permitiendo que un pequeño número de conexiones degrade la disponibilidad del servidor."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "MongoDB",
"product": "MongoDB Server",
"defaultStatus": "unaffected",
"versions": [
{
"version": "7.0",
"lessThan": "7.0.39",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.0",
"lessThan": "8.0.28",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.2.0",
"lessThan": "8.2.12",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.3.0",
"lessThan": "8.3.7",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/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": 6.9,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"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"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-07-23T14:19:53.698681Z",
"id": "CVE-2026-13074",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-770"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.0.0",
"versionEndExcluding": "7.0.39",
"matchCriteriaId": "25F7981C-2E02-4733-8042-90A326345E9B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
"versionStartIncluding": "8.0.0",
"versionEndExcluding": "8.0.28",
"matchCriteriaId": "86DD9B29-E9C9-45E8-86B0-49CF48A10E4D"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
"versionStartIncluding": "8.2.0",
"versionEndExcluding": "8.2.12",
"matchCriteriaId": "50C6E800-3933-4327-8786-86E9C626462E"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
"versionStartIncluding": "8.3.0",
"versionEndExcluding": "8.3.7",
"matchCriteriaId": "DA1F7BFB-1D70-4F45-8EDA-77DED94EE155"
}
]
}
]
}
],
"references": [
{
"url": "https://jira.mongodb.org/browse/SERVER-128517",
"source": "[email protected]",
"tags": [
"Vendor Advisory",
"Issue Tracking",
"Patch"
]
}
]
}