In apache-airflow-providers-ssh before 7.0.1, SSHRemoteJobOperator quoted the values of its templated `environment` parameter only once, although they are placed inside an already-quoted wrapper script, so shell syntax such as `$(...)` in a value was executed on the remote SSH host. In a Dag that passes trigger-time input such as `params` or `dag_run.conf` into `environment`, a user who can trigger that Dag but cannot author Dags could run arbitrary commands on the remote host as the SSH connection's user. Users are advised to upgrade apache-airflow-providers-ssh to 7.0.1 or later.
https://lists.apache.org/thread/k159xrq1tbgmkvl24j63g12qh0mczk79
https://github.com/apache/airflow/pull/74810
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110536
https://airflow.apache.org/docs/apache-airflow-providers-ssh/7.0.1/changelog.html