Severity: low 

Affected versions:

- Apache Airflow SSH provider 4.3.0 before 7.0.1

Description:

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.

Credit:

Enrico Maria Carmona, Serasoft S.r.l. (finder)
Kaxil Naik (remediation developer)

References:

https://github.com/apache/airflow/pull/74810
https://airflow.apache.org/docs/apache-airflow-providers-ssh/7.0.1/changelog.html
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-111422

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