{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-14672","assignerOrgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","state":"PUBLISHED","assignerShortName":"PostgreSQL","dateReserved":"2026-07-03T20:28:13.749Z","datePublished":"2026-08-13T13:00:06.212Z","dateUpdated":"2026-08-13T15:35:56.925Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","shortName":"PostgreSQL","dateUpdated":"2026-08-13T13:00:06.212Z"},"title":"PostgreSQL observable response discrepancy with non-default scram_iterations provides user existence oracle","x_postgresql":{"component":"core server"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"defaultStatus":"unaffected","product":"PostgreSQL","vendor":"n/a","versions":[{"lessThan":"18.5","status":"affected","version":"18","versionType":"rpm"},{"lessThan":"17.11","status":"affected","version":"17","versionType":"rpm"},{"lessThan":"16.15","status":"affected","version":"16","versionType":"rpm"}]}],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-204","type":"CWE","description":"Observable Response Discrepancy"}]}],"references":[{"url":"https://www.postgresql.org/support/security/CVE-2026-14672/"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"configurations":[{"lang":"en","value":"user's SCRAM verifier has non-default iteration count"}],"credits":[{"lang":"en","value":"The PostgreSQL project thanks Radim Marek for reporting this problem."}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T14:47:57.245811Z","id":"CVE-2026-14672","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-13T15:35:56.925Z"}}]}}