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CVE-2026-55765

8.5 · HIGH

CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments.

Published Aug 20, 2026CWE-256EPSS 0.50%

Overview

CVE-2026-55765 is a high-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cloudnative-pg/cloudnative-pg/commit/2f0342747e1f160425b9d51753c0069b0d6117d5GitHubgithub.com/cloudnative-pg/cloudnative-pg/commit/3cd5af5d388c26758acf13c19ea806b4bcebb3feGitHubgithub.com/cloudnative-pg/cloudnative-pg/commit/9a13573dbe3d78721b7ea92141e6d2324a2c0ef0GitHubgithub.com/cloudnative-pg/cloudnative-pg/pull/10724GitHubgithub.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4GitHubgithub.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2GitHubgithub.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0GitHubgithub.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-w3gf-xc94-wvmj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-55765?

CVE-2026-55765 is a high-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH).

How severe is CVE-2026-55765?

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-55765?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55765?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-55765 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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