CVE-2026-6478 Affecting postgresql15 package, versions <15.18-150200.5.57.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.08% (23rd percentile)

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  • Snyk IDSNYK-SLES154-POSTGRESQL15-16770877
  • published20 May 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

NewCVE-2026-6478  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 postgresql15 to version 15.18-150200.5.57.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql15 package and not the postgresql15 package as distributed by SLES. See How to fix? for SLES:15.4 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.

CVSS Base Scores

version 3.1