{"id":"BIT-postgresql-2026-6478","summary":"PostgreSQL discloses MD5-hashed passwords via covert timing channel","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.","aliases":["CVE-2026-6478"],"modified":"2026-05-18T08:01:47.221414Z","published":"2026-05-18T05:53:06.189Z","database_specific":{"cpes":["cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*"],"severity":"Medium"},"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6478"},{"type":"WEB","url":"https://www.postgresql.org/support/security/CVE-2026-6478/"}],"affected":[{"package":{"name":"postgresql","ecosystem":"Bitnami","purl":"pkg:bitnami/postgresql"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"14.23.0"},{"introduced":"15.0.0"},{"fixed":"15.18.0"},{"introduced":"16.0.0"},{"fixed":"16.14.0"},{"introduced":"17.0.0"},{"fixed":"17.10.0"},{"introduced":"18.0.0"},{"fixed":"18.4.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/postgresql/BIT-postgresql-2026-6478.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}],"schema_version":"1.7.5"}