VULNERABILITY INTELLIGENCE

CVE-2026-6478

CVSS score6.5 MEDIUM
EPSS probability0.56%
CISA KEVNot currently listed
Published2026-05-14
Last modified2026-08-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Weakness classification

  • f86ef6dc-4d3a-42ad-8f28-e6d5547a5007: CWE-385
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-385

Primary references