{
  "fix": "RHSA-2026:27742",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-27742",
  "summary": "RHSA-2026:27742, released May 14, 2026, fixes 10 CVEs in postgresql18 (version 18.4-1.el10_2). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "postgresql18 security update",
  "released": "2026-05-14T13:00:15Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-6473, high severity",
  "supported": true,
  "cveCount": 10,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01006,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:27742",
  "appliesTo": [
    {
      "product": "postgresql18",
      "productUrl": "https://patchblox.com/security/product/linux/postgresql18",
      "release": "RHEL 10",
      "fixedVersion": "18.4-1.el10_2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-6473",
      "url": "https://patchblox.com/security/cve/CVE-2026-6473",
      "title": "PostgreSQL server undersizes allocations, via integer wraparound",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.01006,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6479",
      "url": "https://patchblox.com/security/cve/CVE-2026-6479",
      "title": "PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00595,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6478",
      "url": "https://patchblox.com/security/cve/CVE-2026-6478",
      "title": "PostgreSQL discloses MD5-hashed passwords via covert timing channel",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.00558,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6477",
      "url": "https://patchblox.com/security/cve/CVE-2026-6477",
      "title": "PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00454,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6475",
      "url": "https://patchblox.com/security/cve/CVE-2026-6475",
      "title": "PostgreSQL pg_basebackup and pg_rewind can overwrite unrelated files of origin superuser choice",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.0041,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6637",
      "url": "https://patchblox.com/security/cve/CVE-2026-6637",
      "title": "PostgreSQL refint allows stack buffer overflow and SQL injection",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.0037,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6638",
      "url": "https://patchblox.com/security/cve/CVE-2026-6638",
      "title": "PostgreSQL REFRESH PUBLICATION allows SQL injection via table name",
      "priority": "High",
      "severity": "Low",
      "cvss": 8.8,
      "epss": 0.0018,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6474",
      "url": "https://patchblox.com/security/cve/CVE-2026-6474",
      "title": "PostgreSQL timeofday() can disclose portions of server memory",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 4.3,
      "epss": 0.00214,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6575",
      "url": "https://patchblox.com/security/cve/CVE-2026-6575",
      "title": "pgaudit: PostgreSQL is an advanced object-relational database management system (DBMS)",
      "priority": "Routine",
      "severity": "important",
      "cvss": 4.3,
      "epss": 0.00208,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-6472",
      "url": "https://patchblox.com/security/cve/CVE-2026-6472",
      "title": "PostgreSQL CREATE TYPE does not check multirange schema CREATE privilege",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.4,
      "epss": 0.00159,
      "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"
  }
}