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CVE-2026-6478

PostgreSQL

Description

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 6.5EPSS 0.5579999999999999%Risk 0.68
View source
Published
2026-05-14 14:16:25
Affected versions
<18.4, <17.10, <16.14, <15.18, <14.23
Type
Core software
Last modified
2026-08-03 13:18:54
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N