BIT-postgresql-2026-6475
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/postgresql/BIT-postgresql-2026-6475.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-postgresql-2026-6475
- Aliases
-
- CVE-2026-6475
- Published
- 2026-05-18T05:53:02Z
- Modified
- 2026-09-08T08:48:18Z
- Summary
- PostgreSQL pg_basebackup and pg_rewind can overwrite unrelated files of origin superuser choice
- Details
-
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.
- Database specific
{ "cpes": [ "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*" ], "severity": "High" }- References
Affected packages
Bitnami / postgresql
Package
- Name
- postgresql
- Purl
- pkg:bitnami/postgresql
Severity
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator