CVE-2021-3457: Theforeman Smart Proxy Shell Hooks

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An improper authorization handling flaw was found in Foreman. The Shellhooks plugin for the smart-proxy allows Foreman clients to execute actions that should be limited to the Foreman Server. This flaw allows an authenticated local attacker to access and delete limited resources and also causes a denial of service on the Foreman server. The highest threat from this vulnerability is to integrity and system availability.

Affected products

• Theforeman Smart Proxy Shell Hooks: before 0.9.2 (fixed in 0.9.2)

Published 2021-05-12. Last modified 2026-06-17.