PostgreSQL 18 introduced native OAuth 2.0 authentication support, marking an important step towards modern, centralized identity-based access control. However, since every identity provider implements OpenID Connect (OIDC) slightly differently, PostgreSQL delegates token validation to external validator libraries. This is where Percona’s pg_oidc_validator extension comes in - it bridges PostgreSQL with any OIDC-compliant Identity Provider.
This is a companion discussion topic for the original entry at https://percona.community/blog/2026/03/04/postgresql-18-oidc-authentication-with-ping-identity-using-pg_oidc_validator