KedaCore Keda 2.17.3/2.18.2/2.18.3 PostgreSQL Scaler postgresql_scaler.go escapePostgreConnectionParameter host/port/userName/dbName/sslmode/password code injection

Summaryinfo

A vulnerability, which was classified as problematic, was found in KedaCore Keda. This issue affects the function escapePostgreConnectionParameter of the file pkg/scalers/postgresql_scaler.go of the component PostgreSQL Scaler. The manipulation of the argument host/port/userName/dbName/sslmode/password results in code injection. This vulnerability is known as CVE-2026-53572. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in KedaCore Keda. Affected is the function escapePostgreConnectionParameter of the file pkg/scalers/postgresql_scaler.go of the component PostgreSQL Scaler. The manipulation of the argument host/port/userName/dbName/sslmode/password with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

KEDA is a Kubernetes-based Event Driven Autoscaling component. Prior to 2.20.0, pkg/scalers/postgresql_scaler.go constructs libpq-style connection strings from tenant-controlled host, port, userName, dbName, sslmode, and password values, while escapePostgreConnectionParameter() only quotes values containing a literal space. Tabs, newlines, carriage returns, form feeds, vertical tabs, quotes, and backslashes can therefore create additional key-value tokens when pgx parses the string. An attacker able to create or modify a TriggerAuthentication or ScaledObject can inject host or sslmode parameters, redirect the database connection to an attacker-controlled server, expose credentials, or disable intended TLS protection. This issue is fixed in version 2.20.0.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-53572 since 06/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 2.20.0 eliminates this vulnerability.

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Productinfo

Vendor

• KedaCore

Name

• Keda

Version

• 2.17.3
• 2.18.2
• 2.18.3

Website

• Product: https://github.com/kedacore/keda/

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