CVE-2026-6475

01/תיאור (מקור, אנגלית)

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.

02/מוצרים מושפעים

postgresql: postgresql

03/קישורים1

• www.postgresql.org/support/security/CVE-2026-6475/ PatchVendor Advisory