What’s Vulnerable › Vulnerabilities

CVE-2026-53572: KEDA: PostgreSQL connection string parameter injection via incomplete whitespace escaping

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-21 · updated 2026-10-12
• Weakness: CWE-74

Description

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.

Affected products

• kedacore keda: before 2.20.0

References

• https://github.com/kedacore/keda/commit/703de9dec86cb25b6ecfa4948880a90487344d3f
• https://github.com/kedacore/keda/issues/7784
• https://github.com/kedacore/keda/pull/7787
• https://github.com/kedacore/keda/releases/tag/v2.20.0
• https://github.com/kedacore/keda/security/advisories/GHSA-6w3m-4hhp-775q
• https://github.com/kedacore/keda/security/advisories/GHSA-6w3m-4hhp-775q

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