Vulnerability Description
Apache Airflow's Google provider operators `GCSToSFTPOperator` and `GCSTimeSpanFileTransformOperator` joined GCS object names returned by the bucket listing API directly to a destination filesystem path without normalisation or containment check. A user with write access to the source GCS bucket (typically a different trust principal than the DAG author — partner uploads, ingest-only service accounts, public-data buckets) could create an object whose name contains `..` segments and cause the DAG run to write the downloaded blob outside the configured destination (the SFTP `destination_path` for `GCSToSFTPOperator`; the worker-local temp directory for `GCSTimeSpanFileTransformOperator`), enabling overwrite of arbitrary files on the SFTP server or the worker host. Affects deployments that ingest from buckets writable by less-trusted principals. Users are advised to upgrade to `apache-airflow-providers-google` 22.2.1 or later.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Apache-Airflow-Providers-Google | < 22.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/apache/airflow/pull/67667ExploitIssue TrackingPatch
- https://lists.apache.org/thread/[email protected]Mailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/07/04/8Mailing ListThird Party Advisory
FAQ
What is CVE-2026-49297?
CVE-2026-49297 is a vulnerability with a CVSS score of 8.1 (HIGH). Apache Airflow's Google provider operators `GCSToSFTPOperator` and `GCSTimeSpanFileTransformOperator` joined GCS object names returned by the bucket listing API directly to a destination filesystem pa...
How severe is CVE-2026-49297?
CVE-2026-49297 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49297?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Apache-Airflow-Providers-Google.