CVE-2026-14671: PostgreSQL

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Type confusion in PostgreSQL module "refint" allows an object creator to execute arbitrary code as the operating system user running the database. The fix for this emerged as a non-security bug report, and the fix appear in the git repository with subject "refint: Remove plan cache.", without a CVE number. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected products

• PostgreSQL PostgreSQL: from 14.0, before 14.24 (fixed in 14.24); from 15.0, before 15.19 (fixed in 15.19); from 16.0, before 16.15 (fixed in 16.15); from 17.0, before 17.11 (fixed in 17.11); from 18.0, before 18.5 (fixed in 18.5)

Published 2026-08-13. Last modified 2026-08-29.