Path Traversal in Apache Apache-Airflow-Providers-Google
CVE-2026-49297
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.007 (50.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- security@apache.org (Exploit, Patch, patch, Issue Tracking)
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-49297?
- CVE-2026-49297 is a high-severity vulnerability in Apache Apache-Airflow-Providers-Google, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-07-06.
- How severe is CVE-2026-49297?
- High severity. CVSS v3 base score is 8.1 out of 10.