CVE-2026-6475 (GCVE-0-2026-6475)
Vulnerability from cvelistv5
Published
2026-05-14 13:00
Modified
2026-05-15 03:56
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Summary
Symlink following in PostgreSQL pg_basebackup plain format and in pg_rewind allows an origin superuser to overwrite local files, e.g. /var/lib/postgres/.bashrc, that hijack the operating system account. It will remain the case that starting the server after these commands implicitly trusts the origin superuser, due to features like shared_preload_libraries. Hence, the attack has practical implications only if one takes relevant action between these commands and server start, like moving the files to a different VM or snapshotting the VM. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
References
Impacted products
Vendor Product Version
n/a PostgreSQL Version: 18   < 18.4
Version: 17   < 17.10
Version: 16   < 16.14
Version: 15   < 15.18
Version: 0   < 14.23
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