CVE-2026-16239

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.

Score

CVSS 3.1 8.8 High

Status

Modified - f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Published

2026-08-13

Last modified

2026-08-29

Weaknesses

CWE-843

Affected products

• Postgresql (Postgresql)

References

• https://www.postgresql.org/support/security/CVE-2026-16239/