CVE-2026-18698
Full vulnerability record from the local CVENow database.
Description
An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.
Severity
MEDIUM
CVSS score
5.3
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-08-11 19:17:24.120000
Last modified
2026-10-23 21:10:00.157000
View original CVE JSON
{
"id": "CVE-2026-18698",
"sourceIdentifier": "[email protected]",
"published": "2026-08-11T19:17:24.120",
"lastModified": "2026-10-23T21:10:00.157",
"vulnStatus": "Analyzed",
"cveTags": [],
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"value": "An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data."
},
{
"lang": "es",
"value": "Un problema en el servidor MongoDB podría permitir a un usuario autenticado con un rol limitado con ámbito de base de datos realizar una acción contra colecciones de sistema protegidas que debería requerir privilegios más específicos. Esto podría resultar en la exposición de metadatos de la colección y, en ciertas configuraciones de despliegue, la modificación no autorizada de datos de colecciones de sistema."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "MongoDB",
"product": "MongoDB Server",
"defaultStatus": "unaffected",
"versions": [
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"versionType": "semver",
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},
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"versionType": "semver",
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},
{
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"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
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"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/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": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
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"userInteraction": "NONE",
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"vulnIntegrityImpact": "LOW",
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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"
}
}
],
"cvssMetricV31": [
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"cvssData": {
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"scope": "UNCHANGED",
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"ssvcV203": [
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"id": "CVE-2026-18698",
"options": [
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},
{
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},
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}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-863"
}
]
}
],
"configurations": [
{
"nodes": [
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"negate": false,
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"references": [
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"url": "https://jira.mongodb.org/browse/SERVER-130481",
"source": "[email protected]",
"tags": [
"Vendor Advisory",
"Issue Tracking"
]
}
]
}