CVE-2026-55765: Cloudnative-Pg

High severity, CVSS 8.5. EPSS: 0.5% chance of exploitation in the next 30 days.

CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG embedded cleartext role passwords in `ALTER ROLE` and `CREATE ROLE` statements generated by SetUserPassword in pkg/management/postgres/utils/roles.go and appendPasswordOption in internal/management/controller/roles/postgres.go. When pg_stat_statements was preloaded with track_utility enabled and an untrusted tenant held pg_monitor or pg_read_all_stats, the tenant could recover platform-managed superuser or application-owner passwords, reconnect through enabled superuser TCP access, and execute operating system commands in the database pod with `COPY ... FROM PROGRAM`. Clusters using SCRAM-SHA-256 verifiers in managed-role Secrets were not affected. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0.

Affected products

• Cloudnative-Pg Cloudnative-Pg: before 1.28.4 (fixed in 1.28.4); from 1.29.0, before 1.29.2 (fixed in 1.29.2)

Published 2026-08-20. Last modified 2026-09-18.