CVE-2026-16239

High

Open

TLP:CLEAR

PostgreSQL type confusion in cursor CLOSE + DECLARE executes arbitrary code

NVD CVE.org

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Description

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Details

CVSS Score: 8.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Aug 13, 2026
Last Modified: Aug 13, 2026

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