{"id":"JLSEC-2026-605","details":"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.","modified":"2026-07-18T00:02:15.224310435Z","published":"2026-06-08T13:54:13.679Z","upstream":["CVE-2026-6478"],"database_specific":{"license":"CC-BY-4.0","sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6478","database_specific":{"status":"Modified"},"id":"CVE-2026-6478","imported":"2026-07-17T22:13:58.698Z","modified":"2026-07-15T01:16:50.333Z","published":"2026-05-14T14:16:25.463Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-6478"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21182"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22878"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26181"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26203"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26204"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26524"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26525"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26561"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27718"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27738"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27741"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27742"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27743"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28037"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28143"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28208"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28999"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29212"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29815"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29904"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29953"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:32983"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:32994"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33441"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33497"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:34043"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:34362"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:34363"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:35880"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-6478"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477447"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6478.json"},{"type":"WEB","url":"https://www.postgresql.org/support/security/CVE-2026-6478/"}],"affected":[{"package":{"name":"LibPQ_jll","ecosystem":"Julia","purl":"pkg:julia/LibPQ_jll?uuid=08be9ffa-1c94-5ee5-a977-46a84ec9b350"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"16.14.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-605.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}