CVE-2026-14672 Affecting postgresql-18 package, versions <18.6-0ubuntu0.26.04.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-UBUNTU2604-POSTGRESQL18-18768433
  • published21 Aug 2026
  • disclosed13 Aug 2026

Introduced: 13 Aug 2026

NewCVE-2026-14672  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 postgresql-18 to version 18.6-0ubuntu0.26.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql-18 package and not the postgresql-18 package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scram_iterations count, because the authentication challenge for a nonexistent user reports the default scram_iterations. Within major versions 16-18, minor versions before PostgreSQL 18.6, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected.

CVSS Base Scores

version 3.1