CVE-2026-6475 · cross-distro fix matrix

CVE-2026-6475: 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 orig

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2026-6475 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

postgresql-15→ fixed in15.18-0+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postgresql-15
```

Debian trixie

Source: Debian Security Tracker

postgresql-17→ fixed in17.10-0+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postgresql-17
```

Are YOU affected by CVE-2026-6475?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2026-6475dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)