CVE-2026-71462 [MEDIUM] – StringListPathField.to_internal_value() calls os.path.exists() on unbounded

StringListPathField.to_internal_value() calls
os.path.exists() on unbounded user-supplied paths.
200 vs 400 response reveals existence of arbitrary
absolute paths on the controller-web pod. Tenant
superuser can confirm /etc/tower/SECRET_KEY, k8s
service-account token, receptor sockets, ConfigMap
mount points. Mainly impactful on managed AAP
(ansiblecloud.com) where tenant admin != host admin.