CVE-2026-119276
Full vulnerability record from the local CVENow database.
Description
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, when CLIENT_SESSION_TRACK was negotiated, the OkPacket.parse() and OkPacket.parseWithInfo() paths allocated byte arrays using server-declared lengths for the OK packet info field and session-state variable names and values before confirming that the bytes remained in the packet. A malicious or compromised server, or a machine-in-the-middle attacker, could send a small OK packet declaring a much larger length and repeatedly force attacker-controlled heap allocations before the subsequent copy failed. This could create garbage-collection pressure or an OutOfMemoryError in the client application. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.
View original CVE JSON
{
"id": "CVE-2026-119276",
"sourceIdentifier": "[email protected]",
"published": "2026-10-29T21:17:20.907",
"lastModified": "2026-10-29T21:17:20.907",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, when CLIENT_SESSION_TRACK was negotiated, the OkPacket.parse() and OkPacket.parseWithInfo() paths allocated byte arrays using server-declared lengths for the OK packet info field and session-state variable names and values before confirming that the bytes remained in the packet. A malicious or compromised server, or a machine-in-the-middle attacker, could send a small OK packet declaring a much larger length and repeatedly force attacker-controlled heap allocations before the subsequent copy failed. This could create garbage-collection pressure or an OutOfMemoryError in the client application. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "mariadb-corporation",
"product": "mariadb-connector-j",
"versions": [
{
"version": ">= 3.0.0, < 3.3.7",
"status": "affected"
},
{
"version": ">= 3.4.0, < 3.4.5",
"status": "affected"
},
{
"version": ">= 3.5.0, < 3.5.11",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-130"
},
{
"lang": "en",
"value": "CWE-789"
}
]
}
],
"references": [
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/b9e1ee8d9b4d820d70719504cdfd5c97f1aede5f",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/beb445fcf9294113878fc05ac77f0efdf0596ac6",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11",
"source": "[email protected]"
},
{
"url": "https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-h599-m3w5-9m7x",
"source": "[email protected]"
}
]
}