{"id":"ALPINE-CVE-2026-14672","details":"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.","modified":"2026-09-14T16:18:08.113084772Z","published":"2026-08-13T13:17:44.653Z","upstream":["CVE-2026-14672"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-14672"}],"affected":[{"package":{"name":"postgresql16","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/postgresql16?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.15-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql16","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/postgresql16?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.15-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql17","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/postgresql17?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql17","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/postgresql17?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql17","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/postgresql17?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql17","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/postgresql17?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17.11-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql18","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/postgresql18?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.5-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}},{"package":{"name":"postgresql18","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/postgresql18?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.5-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-14672.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}