KEDA: PostgreSQL connection string parameter injection via incomplete whitespace escaping (CVE-2026-53572) | HOL Guard CVE

Medium severityCVE-2026-53572GHSA-6W3M-4HHP-775Q

KEDA: PostgreSQL connection string parameter injection via incomplete whitespace escaping

Answer in brief

CVE-2026-53572 records a Medium severity vulnerability in KEDA: PostgreSQL connection string parameter injection via incomplete whitespace escaping. The current sources do not mark it as known exploited. The current feed maps kedacore/keda (generic), github.com/kedacore/keda/v2 (go). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 21, 2026Updated Aug 21, 2026Source checked Aug 21, 2026First seen by HOL Jul 8, 2026Material review Aug 21, 2026

Upstream Advisory

Key facts

Risk: Medium
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kedacore/keda (generic), github.com/kedacore/keda/v2 (go). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
kedacore/kedageneric	< 2.20.0	Not reported
github.com/kedacore/keda/v2go	<2.20.0	2.20.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for kedacore/keda, github.com/kedacore/keda/v2.
Review the reported fix. Update github.com/kedacore/keda/v2 to 2.20.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 8, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.