PostgreSQL:

Vulnerability Discovery

Guides for finding PostgreSQL auth flaws, weak creds, and misconfigs

4 guides • Created Dec 28, 2025 • Updated Mar 29, 2026

4 guides

PostgreSQL Remote Access Misconfiguration

Mar 26, 2026 • 3 min read

PostgreSQL Superuser and Dangerous Privilege Detection

Mar 26, 2026 • 3 min read

PostgreSQL Trust Authentication Detection

Mar 26, 2026 • 3 min read

PostgreSQL Weak and Default Credential Check

Mar 26, 2026 • 3 min read

PostgreSQL vulnerability discovery starts with pg_hba.conf, the file that controls who connects and how they authenticate. Trust authentication on non-localhost interfaces is an instant win, allowing passwordless access. Peer and ident methods on network connections are similarly dangerous when misconfigured.

Check for weak or default credentials on the postgres superuser and any application accounts. Superuser exposure is critical: if the account you compromised has SUPERUSER, CREATEDB, or CREATEROLE privileges, your exploitation options multiply. Query pg_roles to map exactly what each role can do.

Dangerous extensions (dblink, file_fdw, pg_read_file) that are loaded but unnecessary widen the attack surface. Look for servers listening on 0.0.0.0 instead of localhost, SSL set to off or prefer rather than require, and password_encryption set to md5 instead of scram-sha-256.