Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') Affecting craftcms/cms package, versions >=4.0.0, <4.17.12>=5.0.0, <5.9.18


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-PHP-CRAFTCMSCMS-16438201
  • published7 May 2026
  • disclosed6 May 2026
  • creditprecicom-vincent-tl

Introduced: 6 May 2026

NewCVE-2026-44011  (opens in a new tab)
CWE-470  (opens in a new tab)

How to fix?

Upgrade craftcms/cms to version 4.17.12, 5.9.18 or higher.

Overview

craftcms/cms is a content management system.

Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') via the condition process. An attacker can execute arbitrary commands on the server by injecting malicious configuration during object creation through specially crafted POST requests to administrative endpoints.

CVSS Base Scores

version 4.0
version 3.1