CVE-2026-6478
6.5 MEDIUMCovert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials su...
Published: 2026-05-14 · Last updated: 2026-05-18
Severity and scoring
- CVSS
- 6.5 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CWE
- CWE-385
Affected products
| Vendor | Product |
|---|---|
| postgresql | postgresql |
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.
Source: NVD
References
Related CVEs
Same vendor
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- CVE-2026-6575 — Buffer over-read in PostgreSQL function pg_restore_attribute_stats() accepts array values of unmatched length, which causes query plannin... (4.3 MEDIUM)
- CVE-2026-6479 — Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve... (7.5 HIGH)
- CVE-2026-6477 — Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tel... (8.8 HIGH)
Same CWE
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- CVE-2025-9231 — Issue summary: A timing side-channel which could potentially allow remote recovery of the private key exists in the SM2 algorithm impleme... (6.5 MEDIUM)
- CVE-2025-49087 — In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plai... (4.0 MEDIUM)
- CVE-2024-23170 — An issue was discovered in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2 (5.5 MEDIUM)