---
id: CVE-2026-16503
title: >-
  Deployment of the VPS.org one-click Supabase template deploys a PostgreSQL
  instance that is published on all interfaces (0.0.0.0:5432) with a default
  database password set to "postgres"
summary: >-
  Deployment of the VPS.org one-click Supabase template deploys a PostgreSQL
  instance that is published on all interfaces (0.0.0.0:5432) with a default
  database password set to "postgres". Because Docker installs its own iptables
  rules, th…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-1188
  - CWE-1327
  - CWE-1393
published: '2026-07-31'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T14:10:03.330'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16503'
references:
  - url: 'https://kb.cert.org/vuls/id/243636'
    label: cret@cert.org
tags:
  - nvd
epss: 0.00429
epssPercentile: 0.34451
ingestedAt: '2026-09-08T15:33:26.950Z'
---

## Overview

Deployment of the VPS.org one-click Supabase template deploys a PostgreSQL instance that is published on all interfaces (0.0.0.0:5432) with a default database password set to "postgres". Because Docker installs its own iptables rules, this exposure bypasses a standard host UFW configuration.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.