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vuln-cve/data/2026/84xxx/CVE-2026-84965.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-84965",
"assignerOrgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
"state": "PUBLISHED",
"assignerShortName": "mongodb",
"dateReserved": "2026-09-02T17:58:52.742Z",
"datePublished": "2026-09-03T15:01:21.882Z",
"dateUpdated": "2026-09-03T15:44:49.921Z"
},
"containers": {
"cna": {
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"orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
"shortName": "mongodb",
"dateUpdated": "2026-09-03T15:01:21.882Z"
},
"title": "Heap write primitive via size round-up wrap during JSON parsing on 32-bit builds",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-190",
"description": "CWE-190: Integer Overflow or Wraparound",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "MongoDB",
"product": "C Driver",
"versions": [
{
"status": "affected",
"version": "1.10.0",
"lessThan": "1.30.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "2.0.0",
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],
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{
"lang": "en",
"value": "An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service.",
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"base64": false,
"value": "An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service."
}
]
}
],
"references": [
{
"url": "https://jira.mongodb.org/browse/CDRIVER-6405"
}
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],
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"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "MEDIUM",
"baseScore": 5.9,
"vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
},
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"lang": "en",
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"cvssV3_1": {
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"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH",
"baseSeverity": "MEDIUM",
"baseScore": 5.1,
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
}
],
"source": {
"discovery": "INTERNAL"
},
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},
"adp": [
{
"metrics": [
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"other": {
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"content": {
"timestamp": "2026-09-03T15:43:02.927377Z",
"id": "CVE-2026-84965",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"version": "2.0.3"
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],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"dateUpdated": "2026-09-03T15:44:49.921Z"
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}