CVE-2026-6478

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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "postgresql", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "postgresql", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "postgresql", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": 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{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477447", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6478.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "description": [{"lang": "en", "value": "CWE-385"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-385"}]}], "descriptions": [{"lang": "en", "value": "Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate. This does not affect scram-sha-256 passwords, the default in all supported releases. However, current databases may have MD5-hashed passwords originating in upgrades from PostgreSQL 13 or earlier. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected."}], "lastModified": "2026-07-15T01:16:50.333", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C432AE18-DD50-40EB-B46A-9283F30081DA", "versionEndExcluding": "14.23"}, {"criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9D8D994F-ABAB-4AC2-992F-320F4868698D", "versionEndExcluding": "15.18", "versionStartIncluding": "15.0"}, {"criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B58AE3D3-E1C9-45D2-AA92-A3D135B77A8A", "versionEndExcluding": "16.14", "versionStartIncluding": "16.0"}, {"criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A19538E9-DBB9-4396-AC04-17943E82C411", "versionEndExcluding": "17.10", "versionStartIncluding": "17.0"}, {"criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8DB17ED-67AD-41F2-B272-27AF5B4FA2B0", "versionEndExcluding": "18.4", "versionStartIncluding": "18.0"}], "operator": "OR"}]}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}