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Vulnerabilities CVE-2026-6478

CVE-2026-6478

Medium
Open
TLP:CLEAR

PostgreSQL discloses MD5-hashed passwords via covert timing channel

NVD CVE.org
Critical Infrastructure

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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.

Details

CVSS Score
6.5
EPSS Score
0.56%

43.9th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Confidence
90%
Published
May 14, 2026
Last Modified
Aug 25, 2026
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