CVE-2026-71464

LaunchConfigurationBaseSerializer.scm_branch has no
              validate_scm_branch() leading-dash check, unlike
              Project/JobTemplate/JobLaunch serializers. Schedule and
              WFJT Node accept --upload-pack=/bin/id as scm_branch.
              Currently blocked at runtime by jobs.py:1502 ValueError
              check (defense-in-depth), but the API validation gap
              means sole reliance on a task-layer guard. Refactoring
              that guard away would promote this to RCE.