CVE-2021-3469: Theforeman Foreman

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Foreman versions before 2.3.4 and before 2.4.0 is affected by an improper authorization handling flaw. An authenticated attacker can impersonate the foreman-proxy if product enable the Puppet Certificate authority (CA) to sign certificate requests that have subject alternative names (SANs). Foreman do not enable SANs by default and `allow-authorization-extensions` is set to `false` unless user change `/etc/puppetlabs/puppetserver/conf.d/ca.conf` configuration explicitly.

Affected products

Published 2021-06-03. Last modified 2026-06-17.