Vulnerability Details CVE-2026-14672
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 18.5, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 32.7%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-14672
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cpe:2.3:a:postgresql:postgresql:14.0
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cpe:2.3:a:postgresql:postgresql:14.1
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cpe:2.3:a:postgresql:postgresql:14.10
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cpe:2.3:a:postgresql:postgresql:14.11
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cpe:2.3:a:postgresql:postgresql:14.12
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cpe:2.3:a:postgresql:postgresql:14.13
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cpe:2.3:a:postgresql:postgresql:14.14
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cpe:2.3:a:postgresql:postgresql:14.15
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cpe:2.3:a:postgresql:postgresql:14.16
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cpe:2.3:a:postgresql:postgresql:14.17
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cpe:2.3:a:postgresql:postgresql:14.18
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cpe:2.3:a:postgresql:postgresql:14.19
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cpe:2.3:a:postgresql:postgresql:14.2
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cpe:2.3:a:postgresql:postgresql:14.20
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cpe:2.3:a:postgresql:postgresql:14.21
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cpe:2.3:a:postgresql:postgresql:14.22
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cpe:2.3:a:postgresql:postgresql:14.23
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cpe:2.3:a:postgresql:postgresql:14.3
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cpe:2.3:a:postgresql:postgresql:14.4
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cpe:2.3:a:postgresql:postgresql:14.5
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cpe:2.3:a:postgresql:postgresql:14.6
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cpe:2.3:a:postgresql:postgresql:14.7
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cpe:2.3:a:postgresql:postgresql:14.8
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cpe:2.3:a:postgresql:postgresql:14.9
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cpe:2.3:a:postgresql:postgresql:15.0
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cpe:2.3:a:postgresql:postgresql:15.1
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cpe:2.3:a:postgresql:postgresql:15.10
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cpe:2.3:a:postgresql:postgresql:15.11
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cpe:2.3:a:postgresql:postgresql:15.12
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cpe:2.3:a:postgresql:postgresql:15.13
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cpe:2.3:a:postgresql:postgresql:15.14
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cpe:2.3:a:postgresql:postgresql:15.15
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cpe:2.3:a:postgresql:postgresql:15.16
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cpe:2.3:a:postgresql:postgresql:15.17
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cpe:2.3:a:postgresql:postgresql:15.18
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cpe:2.3:a:postgresql:postgresql:15.2
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cpe:2.3:a:postgresql:postgresql:15.3
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cpe:2.3:a:postgresql:postgresql:15.4
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cpe:2.3:a:postgresql:postgresql:15.5
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cpe:2.3:a:postgresql:postgresql:15.6
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cpe:2.3:a:postgresql:postgresql:15.7
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cpe:2.3:a:postgresql:postgresql:15.8
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cpe:2.3:a:postgresql:postgresql:15.9
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cpe:2.3:a:postgresql:postgresql:16.0
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cpe:2.3:a:postgresql:postgresql:16.1
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cpe:2.3:a:postgresql:postgresql:16.10
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cpe:2.3:a:postgresql:postgresql:16.11
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cpe:2.3:a:postgresql:postgresql:16.12
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cpe:2.3:a:postgresql:postgresql:16.13
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cpe:2.3:a:postgresql:postgresql:16.14
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cpe:2.3:a:postgresql:postgresql:16.2
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cpe:2.3:a:postgresql:postgresql:16.3
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cpe:2.3:a:postgresql:postgresql:16.4
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cpe:2.3:a:postgresql:postgresql:16.5
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cpe:2.3:a:postgresql:postgresql:16.6
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cpe:2.3:a:postgresql:postgresql:16.7
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cpe:2.3:a:postgresql:postgresql:16.8
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cpe:2.3:a:postgresql:postgresql:16.9
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cpe:2.3:a:postgresql:postgresql:17.0
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cpe:2.3:a:postgresql:postgresql:17.1
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cpe:2.3:a:postgresql:postgresql:17.10
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cpe:2.3:a:postgresql:postgresql:17.2
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cpe:2.3:a:postgresql:postgresql:17.3
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cpe:2.3:a:postgresql:postgresql:17.4
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cpe:2.3:a:postgresql:postgresql:17.5
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cpe:2.3:a:postgresql:postgresql:17.6
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cpe:2.3:a:postgresql:postgresql:17.7
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cpe:2.3:a:postgresql:postgresql:17.8
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cpe:2.3:a:postgresql:postgresql:17.9