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

Quick assessment

Affected
kedacore keda
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

KEDA 是一个基于 Kubernetes 的事件驱动自动伸缩组件。在版本 2.20.0 之前， 会根据租户控制的 host、port、userName、dbName、sslmode 和 password 等值构造类似 libpq 风格的连接字符串。然而，函数 仅对包含字面空格的值添加引号，而制表符（tabs）、换行符（newlines）、回车符（carriage returns）、换页符（form feeds）、垂直制表符（vertical tabs）、引号和反斜杠等字符在 解析该连接字符串时，可能被解释为额外的

CVSS 5.9 · Medium EPSS 0.32% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
kedacore keda < 2.20.0 affected
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I. Basic Information for CVE-2026-53572

Vulnerability Information
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Vulnerability Title
KEDA: PostgreSQL connection string parameter injection via incomplete whitespace escaping
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kedacore keda < 2.20.0 -

II. Public POCs for CVE-2026-53572

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III. Intelligence Information for CVE-2026-53572

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Patches & Fixes for CVE-2026-53572 (2)

Vendor Advisories for CVE-2026-53572 (1)

Vendor Pages for CVE-2026-53572 (1)

Other References for CVE-2026-53572 (1)

IV. Related Vulnerabilities

Same product: keda
Same vendor: kedacore
Same weakness: CWE-74

V. Comments for CVE-2026-53572

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