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vuln-cve/data/2026/102xxx/CVE-2026-102466.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-102466",
"assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
"state": "PUBLISHED",
"assignerShortName": "eclipse",
"dateReserved": "2026-09-29T08:30:09.941Z",
"datePublished": "2026-10-15T08:15:32.883Z",
"dateUpdated": "2026-10-15T14:24:55.316Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
"shortName": "eclipse",
"dateUpdated": "2026-10-15T08:15:32.883Z"
},
"affected": [
{
"vendor": "Eclipse Foundation",
"product": "Eclipse Vert.x",
"versions": [
{
"status": "affected",
"version": "4.0.0",
"lessThanOrEqual": "4.5.34",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.0.0",
"lessThanOrEqual": "5.0.12",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.1.0",
"lessThanOrEqual": "5.1.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.2.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x MySQL client (vertx-mysql-client) pre-allocates an array for column definitions based on a server-declared column count with no upper-bound validation. A malicious or compromised MySQL server, or an attacker with man-in-the-middle positioning, can send a crafted result set packet with an extremely large column count, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Netty event loop thread, causing a complete denial of service for all connections and verticles in the Vert.x application.\n\n\n\nThe impacted component is io.vertx:vertx-mysql-client.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x MySQL client (vertx-mysql-client) pre-allocates an array for column definitions based on a server-declared column count with no upper-bound validation. A malicious or compromised MySQL server, or an attacker with man-in-the-middle positioning, can send a crafted result set packet with an extremely large column count, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Netty event loop thread, causing a complete denial of service for all connections and verticles in the Vert.x application.</p><p>The impacted component is io.vertx:vertx-mysql-client.</p>"
}
]
}
],
"references": [
{
"url": "https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-9jxp-x3fr-ffqh"
},
{
"url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/342"
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"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": "HIGH",
"baseScore": 8.2,
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
}
],
"credits": [
{
"lang": "en",
"value": "Mike Read",
"type": "finder"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
},
"adp": [
{
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-789",
"lang": "en",
"description": "CWE-789 Memory Allocation with Excessive Size Value"
}
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-10-15T14:23:56.020086Z",
"id": "CVE-2026-102466",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-15T14:24:55.316Z"
}
}
]
}
}