CVE-2026-6478
Estado: ModificadaMedia (6.5)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.56%
- Percentil entre todas las CVEs puntuadas: 45
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-385
- CWE-385
Referencias
- https://www.postgresql.org/support/security/CVE-2026-6478/
- https://access.redhat.com/errata/RHSA-2026:21182
- https://access.redhat.com/errata/RHSA-2026:22878
- https://access.redhat.com/errata/RHSA-2026:26181
- https://access.redhat.com/errata/RHSA-2026:26203
- https://access.redhat.com/errata/RHSA-2026:26204
- https://access.redhat.com/errata/RHSA-2026:26524
- https://access.redhat.com/errata/RHSA-2026:26525
- https://access.redhat.com/errata/RHSA-2026:26561
- https://access.redhat.com/errata/RHSA-2026:27718
- https://access.redhat.com/errata/RHSA-2026:27738
- https://access.redhat.com/errata/RHSA-2026:27741
- https://access.redhat.com/errata/RHSA-2026:27742
- https://access.redhat.com/errata/RHSA-2026:27743
- https://access.redhat.com/errata/RHSA-2026:28037
- https://access.redhat.com/errata/RHSA-2026:28143
- https://access.redhat.com/errata/RHSA-2026:28208
- https://access.redhat.com/errata/RHSA-2026:28999
- https://access.redhat.com/errata/RHSA-2026:29212
- https://access.redhat.com/errata/RHSA-2026:29815
- https://access.redhat.com/errata/RHSA-2026:29904
- https://access.redhat.com/errata/RHSA-2026:29953
- https://access.redhat.com/errata/RHSA-2026:32983
- https://access.redhat.com/errata/RHSA-2026:32994
- https://access.redhat.com/errata/RHSA-2026:33441
- https://access.redhat.com/errata/RHSA-2026:33497
- https://access.redhat.com/errata/RHSA-2026:34043
- https://access.redhat.com/errata/RHSA-2026:34362
- https://access.redhat.com/errata/RHSA-2026:34363
- https://access.redhat.com/errata/RHSA-2026:35880
- https://access.redhat.com/errata/RHSA-2026:42555
- https://access.redhat.com/errata/RHSA-2026:44420
- https://access.redhat.com/errata/RHSA-2026:44481
- https://access.redhat.com/errata/RHSA-2026:49521
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/security/cve/CVE-2026-6478
- https://bugzilla.redhat.com/show_bug.cgi?id=2477447
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6478.json
JSON original (NVD)
Mostrar
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