Security Advisory

CVE-2026-14672

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-13 13:00:06

Last updated 2026-08-29 23:07:17

Assigner PostgreSQL

CVSS score 5.3

State PUBLISHED

Description

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.

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