Database takeover via exposed default superuser credentials
Published Jul 31, 2026 · Updated Jul 31, 2026
Default credentials in VPS.org Supabase Template allow remote attackers to gain PostgreSQL superuser access over TCP port 5432. The static deployment template publishes PostgreSQL on 0.0.0.0 and sets the postgres account password to postgres, while Docker's iptables rules bypass standard host UFW filtering. Exploitation requires network reachability to the published port and grants authority to read, modify, or delete database contents and alter schema, roles, and privileges.
Summary
What happened
Default credentials in VPS.org Supabase Template allow remote attackers to gain PostgreSQL superuser access over TCP port 5432. The static deployment template publishes PostgreSQL on 0.0.0.0 and sets the postgres account password to postgres, while Docker's iptables rules bypass standard host UFW filtering. Exploitation requires network reachability to the published port and grants authority to read, modify, or delete database contents and alter schema, roles, and privileges.
The record
- CVE
- CVE-2026-16503
- Published
- Jul 31, 2026
- Updated
- Jul 31, 2026
- Vendor
- VPS.org
- Product
- Supabase Template
- Classifications
- CWE-1188, T1078.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 31, 2026CVE publishedPublication date reported by the CVE source.
- Jul 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=N/A
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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