CVE-2026-55765
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.
What this means for your business
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 40% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 8.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H- Weakness
- CWE-256
- Assigned by
- security-advisories@github.com
Dates
- Published
- 2026-08-20
- Last modified
- 2026-09-18
- Sources
- NVD
References
- https://github.com/cloudnative-pg/cloudnative-pg/commit/2f0342747e1f160425b9d51753c0069b0d6117d5
- https://github.com/cloudnative-pg/cloudnative-pg/commit/3cd5af5d388c26758acf13c19ea806b4bcebb3fe
- https://github.com/cloudnative-pg/cloudnative-pg/commit/9a13573dbe3d78721b7ea92141e6d2324a2c0ef0
- https://github.com/cloudnative-pg/cloudnative-pg/pull/10724
- https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4
- https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2
- https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0
- https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-w3gf-xc94-wvmj