CVE-2026-6478 Affecting postgresql:16/postgresql-test package, versions <0:16.14-1.module_el8.10.0+4199+bf03c564


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.56% (43rd percentile)

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  • Snyk IDSNYK-ALMALINUX8-POSTGRESQL-17458701
  • published25 Jun 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-6478  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 postgresql:16/postgresql-test to version 0:16.14-1.module_el8.10.0+4199+bf03c564 or higher.
This issue was patched in ALSA-2026:28143.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql:16/postgresql-test package and not the postgresql:16/postgresql-test package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1