Vulnerability from bitnami_vulndb
Published
2026-08-19 08:52
Modified
2026-08-19 09:09
Summary
PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read
Details

Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "postgresql",
        "purl": "pkg:bitnami/postgresql"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.24.0"
            },
            {
              "introduced": "15.0.0"
            },
            {
              "fixed": "15.19.0"
            },
            {
              "introduced": "16.0.0"
            },
            {
              "fixed": "16.15.0"
            },
            {
              "introduced": "17.0.0"
            },
            {
              "fixed": "17.11.0"
            },
            {
              "introduced": "18.0.0"
            },
            {
              "fixed": "18.5.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-14668"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input.  While the calculation loses precision, substantial memory value recovery appears possible.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.",
  "id": "BIT-postgresql-2026-14668",
  "modified": "2026-08-19T09:09:14.600Z",
  "published": "2026-08-19T08:52:33.567Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14668"
    },
    {
      "type": "WEB",
      "url": "https://www.postgresql.org/support/security/CVE-2026-14668/"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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