NetSight
IP …
medium6.5

CVE-2026-6478

Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authentica…

Impact

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.

Affected products

VendorProductAffected versions
PostgresqlPostgresql
before 14.23
from 15.0 before 15.18
from 16.0 before 16.14
from 17.0 before 17.10
from 18.0 before 18.4

Weakness classification

CWE-385

References