UBUNTU-CVE-2026-14666 (CVE-2026-14666)

Vulnerability from osv_ubuntu – Published: 2026-08-13 13:17 – Updated: 2026-09-02 16:12 – Source website
VLAI
Details

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.


{
  "affected": [
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          {
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          {
            "binary_name": "postgresql-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
          },
          {
            "binary_name": "postgresql-client-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
          },
          {
            "binary_name": "postgresql-contrib-9.3",
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          {
            "binary_name": "postgresql-doc-9.3",
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          },
          {
            "binary_name": "postgresql-plperl-9.3",
            "binary_version": "9.3.24-0ubuntu0.14.04+esm1"
          },
          {
            "binary_name": "postgresql-plpython-9.3",
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          },
          {
            "binary_name": "postgresql-plpython3-9.3",
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          },
          {
            "binary_name": "postgresql-pltcl-9.3",
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            "binary_name": "postgresql-server-dev-9.3",
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            "binary_name": "postgresql-9.5",
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            "binary_name": "postgresql-client-9.5",
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            "binary_name": "postgresql-contrib-9.5",
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            "binary_name": "postgresql-doc-9.5",
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            "binary_name": "postgresql-plpython-9.5",
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            "binary_name": "postgresql-plperl-10",
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            "binary_name": "postgresql-plpython-10",
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            "binary_name": "postgresql-plpython3-10",
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            "binary_name": "postgresql-server-dev-10",
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            "binary_name": "libecpg6",
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            "binary_name": "postgresql-doc-12",
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            "binary_version": "18.6-0ubuntu0.26.04.1"
          },
          {
            "binary_name": "postgresql-plperl-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
          },
          {
            "binary_name": "postgresql-plpython3-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
          },
          {
            "binary_name": "postgresql-pltcl-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
          },
          {
            "binary_name": "postgresql-server-dev-18",
            "binary_version": "18.6-0ubuntu0.26.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "postgresql-18",
        "purl": "pkg:deb/ubuntu/postgresql-18@18.6-0ubuntu0.26.04.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "18.6-0ubuntu0.26.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "18.0-1",
        "18.1-1",
        "18.1-1ubuntu1",
        "18.1-1ubuntu2",
        "18.1-2",
        "18.3-1",
        "18.4-0ubuntu0.26.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse.  Stale policies continue until some other event invalidates the cache or connection termination ends the session.  This permits a user to complete reads and modifications that were recently permitted but now forbidden.  An attacker must tailor an attack to a particular application\u0027s pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.",
  "id": "UBUNTU-CVE-2026-14666",
  "modified": "2026-09-02T16:12:05Z",
  "published": "2026-08-13T13:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-14666"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-14666"
    },
    {
      "type": "REPORT",
      "url": "https://www.postgresql.org/support/security/CVE-2026-14666/"
    },
    {
      "type": "REPORT",
      "url": "https://www.postgresql.org/about/news/postgresql-186-1711-1615-1519-1424-and-19-beta-3-released-3365/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8653-1"
    }
  ],
  "related": [
    "USN-8653-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-14666"
  ]
}



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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.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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