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Vulnerability record · CVE-2026-16503 · published 31 July 2026

CVE-2026-16503: Insecure default initialization vulnerability

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.

9.1 CVSS 3.1 Critical EPSS 0.43% · top 65.3% CWE-1188 · Insecure default initializationCWE-1327 · CWE-1327 Awaiting Analysis
9.1CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
8 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://kb.cert.org/vuls/id/243636

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Source: NIST National Vulnerability Database (record CVE-2026-16503), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.