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CVE-2026-6475 PostgreSQL pg_basebackup and pg_rewind can overwrite unrelated files of origin superuser choice

🗓️ 14 May 2026 13:00:11Reported by PostgreSQLType 
cvelist
 cvelist
🔗 www.cve.org👁 34 Views

PostgreSQL basebackup and rewind symlink flaw lets origin superuser overwrite local files and hijack operating system account.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "product": "PostgreSQL",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "18.4",
        "status": "affected",
        "version": "18",
        "versionType": "rpm"
      },
      {
        "lessThan": "17.10",
        "status": "affected",
        "version": "17",
        "versionType": "rpm"
      },
      {
        "lessThan": "16.14",
        "status": "affected",
        "version": "16",
        "versionType": "rpm"
      },
      {
        "lessThan": "15.18",
        "status": "affected",
        "version": "15",
        "versionType": "rpm"
      },
      {
        "lessThan": "14.23",
        "status": "affected",
        "version": "0",
        "versionType": "rpm"
      }
    ]
  }
]

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14 May 2026 13:00Current
CVSS 3.18.8
EPSS0.00049
34