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Vulnerability record · CVE-2026-16239 · published 13 August 2026

CVE-2026-16239: Postgresql type confusion vulnerability

Postgresql · Postgresql

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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

8.8 CVSS 3.1 High EPSS 0.68% · top 49.4% CWE-843 · Type confusion
8.8CVSS 3.1 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
29 Aug 2026Last modified by NVD

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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.postgresql.org/support/security/CVE-2026-16239/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-16239), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.