A flaw was found in Jenkins. The Pipeline: Multibranch uses the same checkout directories for distinct SCMs for the readTrusted step. This flaw allows attackers with item/configure permission to invoke arbitrary OS commands on the controller through crafted SCM contents.This allows attackers to compromise confidentiality, integrity, and availability.

A flaw was found in Jenkins. The Pipeline: Multibranch follows symbolic links to locations outside of the checkout directory for the configured SCM when reading files using the readTrusted step. This flaw allows attackers that can configure Pipelines, to read arbitrary files on the Jenkins controller file system.