cloudnative-pg CloudNativePG up to 1.28.3/1.29.1 Pool Profiles profiles.go fillDefaultParameters privileges management

Summaryinfo

A vulnerability was found in cloudnative-pg CloudNativePG up to 1.28.3/1.29.1. It has been rated as problematic. Impacted is the function fillDefaultParameters of the file pkg/management/postgres/pool/profiles.go of the component Pool Profiles. Performing a manipulation results in privileges management. This vulnerability is identified as CVE-2026-55769. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in cloudnative-pg CloudNativePG up to 1.28.3/1.29.1. It has been classified as problematic. This affects the function fillDefaultParameters of the file pkg/management/postgres/pool/profiles.go of the component Pool Profiles. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG opened superuser connections without pinning search_path in fillDefaultParameters in pkg/management/postgres/pool/profiles.go. A role holding DATABASE OWNER could create overloaded built-in operators in the public schema and change the database or role search_path, causing instance-manager introspection queries such as SELECT COUNT(*) > 0 FROM pg_catalog.pg_extension WHERE extname = $1 to execute attacker-controlled functions as the postgres superuser. The same trust issue affected direct sql.Open("pgx", ...) callsites and the public.user_search SECURITY DEFINER function, enabling PostgreSQL superuser access, operating system command execution through COPY ... FROM PROGRAM, and access to the pod ServiceAccount token. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-55769 since 06/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.28.4, 1.29.2 or 1.30.0 eliminates this vulnerability.

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Productinfo

Type

• Cloud Software

Vendor

• cloudnative-pg

Name

• CloudNativePG

Version

• 1.28.0
• 1.28.1
• 1.28.2
• 1.28.3
• 1.29.0
• 1.29.1

CPE 2.3info

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CPE 2.2info

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