{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-21952",
        "assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
        "state": "PUBLISHED",
        "assignerShortName": "oracle",
        "dateReserved": "2026-01-05T18:07:34.713Z",
        "datePublished": "2026-01-20T21:56:30.311Z",
        "dateUpdated": "2026-01-21T15:23:16.511Z"
    },
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                "orgId": "43595867-4340-4103-b7a2-9a5208d29a85",
                "shortName": "oracle",
                "dateUpdated": "2026-01-20T21:56:30.311Z"
            },
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                {
                    "descriptions": [
                        {
                            "lang": "en-US",
                            "description": "Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Oracle Corporation",
                    "product": "MySQL Server",
                    "versions": [
                        {
                            "version": "9.0.0",
                            "status": "affected",
                            "lessThanOrEqual": "9.5.0",
                            "versionType": "custom"
                        }
                    ]
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                    "nodes": [
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                            "negate": false,
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
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                                    "versionEndIncluding": "9.5.0"
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                    "lang": "en-US",
                    "value": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser).  Supported versions that are affected are 9.0.0-9.5.0. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)."
                }
            ],
            "references": [
                {
                    "url": "https://www.oracle.com/security-alerts/cpujan2026.html",
                    "name": "Oracle Advisory",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 4.9,
                        "baseSeverity": "MEDIUM"
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                        "descriptions": [
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                                "type": "CWE",
                                "cweId": "CWE-400",
                                "lang": "en",
                                "description": "CWE-400 Uncontrolled Resource Consumption"
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                "metrics": [
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                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-01-21T15:20:25.312887Z",
                                "id": "CVE-2026-21952",
                                "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",
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