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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
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| https://www.postgresql.org/support/security/CVE-2026-14672/ |
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History
Thu, 13 Aug 2026 16:30:00 +0000
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ssvc
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Thu, 13 Aug 2026 15:00:00 +0000
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Postgresql
Postgresql postgresql |
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| Vendors & Products |
Postgresql
Postgresql postgresql |
Thu, 13 Aug 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
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| 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 18.5, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected. | |
| Title | PostgreSQL observable response discrepancy with non-default scram_iterations provides user existence oracle | |
| Weaknesses | CWE-204 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: PostgreSQL
Published:
Updated: 2026-08-13T15:35:56.925Z
Reserved: 2026-07-03T20:28:13.749Z
Link: CVE-2026-14672
Updated: 2026-08-13T15:35:50.664Z
Status : Received
Published: 2026-08-13T13:17:44.653
Modified: 2026-08-13T16:17:56.420
Link: CVE-2026-14672
No data.
OpenCVE Enrichment
Updated: 2026-08-13T14:45:03Z