It was discovered that the bzr did not properly filter bzr+ssh: URLs, which can be exploited to inject commands via malicious URLs.
Created bzr tracking bugs for this issue:
Affects: fedora-all [bug 1486686]
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.