{
  "fix": "RHSA-2026:6391",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-6391",
  "summary": "RHSA-2026:6391, released April 15, 2026, fixes 6 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: Routine.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 12 packages",
  "released": "2026-04-15T19:03:41Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 6 CVEs, none high severity",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00404,
  "maxCvss": 6.5,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:6391",
  "appliesTo": [
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      "release": "RHEL 8",
      "fixedVersion": "0:0.996-2.module\u002Bel8.10.0\u002B23550\u002Bbd321b9a",
      "supported": true
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    {
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      "fixedVersion": "0:0.996-2.module\u002Bel8.10.0\u002B23550\u002Bbd321b9a",
      "supported": true
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    {
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      "release": "RHEL 8",
      "fixedVersion": "0:2.7.0.20070801-17.module\u002Bel8.10.0\u002B23550\u002Bbd321b9a",
      "supported": true
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    {
      "product": "mecab-ipadic-EUCJP",
      "productUrl": "https://patchblox.com/security/product/linux/mecab-ipadic-eucjp",
      "release": "RHEL 8",
      "fixedVersion": "0:2.7.0.20070801-17.module\u002Bel8.10.0\u002B23550\u002Bbd321b9a",
      "supported": true
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    {
      "product": "mysql",
      "productUrl": "https://patchblox.com/security/product/linux/mysql",
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      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
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    {
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      "productUrl": "https://patchblox.com/security/product/linux/mysql-common",
      "release": "RHEL 8",
      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
    },
    {
      "product": "mysql-devel",
      "productUrl": "https://patchblox.com/security/product/linux/mysql-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
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    {
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      "productUrl": "https://patchblox.com/security/product/linux/mysql-errmsg",
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      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/mysql-libs",
      "release": "RHEL 8",
      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
    },
    {
      "product": "mysql-server",
      "productUrl": "https://patchblox.com/security/product/linux/mysql-server",
      "release": "RHEL 8",
      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
    },
    {
      "product": "mysql-test",
      "productUrl": "https://patchblox.com/security/product/linux/mysql-test",
      "release": "RHEL 8",
      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
      "supported": true
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    {
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      "fixedVersion": "0:8.4.8-1.module\u002Bel8.10.0\u002B24007\u002Bc07a67f2",
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  ],
  "cves": [
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      "cveId": "CVE-2026-21964",
      "url": "https://patchblox.com/security/cve/CVE-2026-21964",
      "title": "mysql8.4: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling)",
      "priority": "Routine",
      "severity": "moderate",
      "cvss": 6.5,
      "epss": 0.00404,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21936",
      "url": "https://patchblox.com/security/cve/CVE-2026-21936",
      "title": "mysql-testsuite: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB)",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21937",
      "url": "https://patchblox.com/security/cve/CVE-2026-21937",
      "title": "libmysqlclient24: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL)",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21941",
      "url": "https://patchblox.com/security/cve/CVE-2026-21941",
      "title": "mysql8.4: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)",
      "priority": "Routine",
      "severity": "moderate",
      "cvss": 6.5,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21948",
      "url": "https://patchblox.com/security/cve/CVE-2026-21948",
      "title": "mysql8.4: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)",
      "priority": "Routine",
      "severity": "moderate",
      "cvss": 6.5,
      "epss": 0.00401,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21968",
      "url": "https://patchblox.com/security/cve/CVE-2026-21968",
      "title": "galera: MariaDB is a multi-user, multi-threaded SQL database server that is binary compatible with MySQL",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00308,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}