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CVE-2026-14672 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: PostgreSQLCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.postgresql.org/support/security/CVE-2026-14672/	PostgreSQL	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-204	Observable Response Discrepancy	PostgreSQL

Affected Products

Product	Versions
postgresql postgresql	>= 14.0, < 14.24 >= 15.0, < 15.19 >= 16.0, < 16.15 >= 17.0, < 17.11 >= 18.0, < 18.5
CPE cpe:2.3:a:postgresql:postgresql:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Aug 29, 2026	CVE Modified	PostgreSQL
Aug 19, 2026	Initial Analysis	[email protected]
Aug 13, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	New CVE Received	PostgreSQL