CVE-2026-55765 Information disclosure in cloudnative-pg
Privileged tenants can recover superuser passwords from pg_stat_statements to achieve remote code execution in the database pod.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55765?
CVE-2026-55765 is a high-severity vulnerability in cloudnative-pg, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-55765?
How do I fix CVE-2026-55765?
Upgrade to a fixed version.
Is CVE-2026-55765 being exploited?
There is no known exploitation of CVE-2026-55765 in the wild and no public exploit code.
Sources
Also known as GHSA-w3gf-xc94-wvmj.