Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-6478

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 22.9%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-6478


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