CVE-2025-5459: OS Command Injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-26 · updated 2026-09-04
Weakness: CWE-78

Description

A user with specific node group editing permissions and a specially crafted class parameter could be used to execute commands as root on the primary host. It affects Puppet Enterprise versions 2018.1.8 through 2023.8.3 and 2025.3 and has been resolved in versions 2023.8.4 and 2025.4.0.

Affected products

Puppet Enterprise: from 2018.1.8 before 2023.8.4; 2025.3.0 — fixed in 2023.8.4

How to fix

Upgrade to a fixed version: Puppet Enterprise 2023.8.4. Check the vendor advisory for mitigations.

References

https://portal.perforce.com/s/detail/a91PA000001SiDdYAK
http://seclists.org/fulldisclosure/2026/Sep/9

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