PostgreSQL discloses MD5-hashed passwords via covert timing channel
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-6478US | — | — | ||
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 af… | ||||
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references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:21182WEB
- https://access.redhat.com/errata/RHSA-2026:22878WEB
- https://access.redhat.com/errata/RHSA-2026:26181WEB
- https://access.redhat.com/errata/RHSA-2026:26203WEB
- https://access.redhat.com/errata/RHSA-2026:26204WEB
- https://access.redhat.com/errata/RHSA-2026:26524WEB
- https://access.redhat.com/errata/RHSA-2026:26525WEB
- https://access.redhat.com/errata/RHSA-2026:26561WEB
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