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vuln-cve/data/2026/3xxx/CVE-2026-3960.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-3960",
"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"state": "PUBLISHED",
"assignerShortName": "@huntr_ai",
"dateReserved": "2026-03-11T12:52:45.232Z",
"datePublished": "2026-04-23T08:47:48.618Z",
"dateUpdated": "2026-04-23T12:29:32.439Z"
},
"containers": {
"cna": {
"title": "Remote Code Execution in h2oai/h2o-3",
"providerMetadata": {
"orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"shortName": "@huntr_ai",
"dateUpdated": "2026-04-23T08:47:48.618Z"
},
"descriptions": [
{
"lang": "en",
"value": "A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in H2O-3 version 3.46.0.9 and prior. The vulnerability arises due to insufficient security controls in the parameter blacklist mechanism, which only targets MySQL JDBC driver-specific dangerous parameters. An attacker can bypass these controls by switching the JDBC URL protocol to jdbc:postgresql: and exploiting PostgreSQL JDBC driver-specific parameters such as socketFactory and socketFactoryArg. This allows unauthenticated attackers to execute arbitrary code on the H2O-3 server with the privileges of the H2O-3 process. The issue is resolved in version 3.46.0.10."
}
],
"affected": [
{
"vendor": "h2oai",
"product": "h2oai/h2o-3",
"versions": [
{
"version": "unspecified",
"lessThan": "3.46.0.10",
"status": "affected",
"versionType": "custom"
}
]
}
],
"references": [
{
"url": "https://huntr.com/bounties/6954fe04-b905-453f-8c53-205ac8377e0d"
},
{
"url": "https://github.com/h2oai/h2o-3/commit/b9ae2d3c5220db2dc53753357a783e590364d044"
}
],
"metrics": [
{
"cvssV3_0": {
"version": "3.0",
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.9,
"baseSeverity": "MEDIUM"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"lang": "en",
"description": "CWE-94 Improper Control of Generation of Code",
"cweId": "CWE-94"
}
]
}
],
"source": {
"advisory": "6954fe04-b905-453f-8c53-205ac8377e0d",
"discovery": "EXTERNAL"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-23T12:25:29.022861Z",
"id": "CVE-2026-3960",
"options": [
{
"Exploitation": "poc"
},
{
"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": "2026-04-23T12:29:32.439Z"
}
}
]
}
}