CVE-2026-102463
Full vulnerability record from the local CVENow database.
Description
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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimension count with no upper bound. A malicious or compromised PostgreSQL server, or an on-path attacker intercepting an unencrypted connection, can send a crafted DataRow message with an excessively large array dimension value, causing the client to attempt a multi-gigabyte heap allocation and crash with an OutOfMemoryError. The impacted component is io.vertx:vertx-pg-client.
Severity
HIGH
CVSS score
8.2
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-10-15 09:17:15.143000
Last modified
2026-10-20 19:28:54.520000
View original CVE JSON
{
"id": "CVE-2026-102463",
"sourceIdentifier": "[email protected]",
"published": "2026-10-15T09:17:15.143",
"lastModified": "2026-10-20T19:28:54.520",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
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"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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimension count with no upper bound. A malicious or compromised PostgreSQL server, or an on-path attacker intercepting an unencrypted connection, can send a crafted DataRow message with an excessively large array dimension value, causing the client to attempt a multi-gigabyte heap allocation and crash with an OutOfMemoryError.\n\n\n\nThe impacted component is io.vertx:vertx-pg-client."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Eclipse Foundation",
"product": "Eclipse Vert.x",
"defaultStatus": "unaffected",
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"versionType": "semver",
"status": "affected"
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],
"metrics": {
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"source": "[email protected]",
"type": "Secondary",
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"attackRequirements": "NONE",
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"vulnIntegrityImpact": "NONE",
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"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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"source": "[email protected]",
"type": "Primary",
"cvssData": {
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"scope": "UNCHANGED",
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},
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"impactScore": 3.6
}
],
"ssvcV203": [
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"ssvcData": {
"timestamp": "2026-10-15T14:27:24.726424Z",
"id": "CVE-2026-102463",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
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"role": "CISA Coordinator",
"version": "2.0.3"
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"description": [
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"value": "CWE-789"
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"configurations": [
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"nodes": [
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"references": [
{
"url": "https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-xqmh-8fhj-48fp",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
},
{
"url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/345",
"source": "[email protected]",
"tags": [
"Issue Tracking",
"Third Party Advisory"
]
}
]
}