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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/apache/airflow/pull/67667	Exploit Issue Tracking Patch
https://lists.apache.org/thread/cb5nvoxsj1q7rv878cyqgtg150w0zglq?users@airflow.apache.org	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/04/8	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:apache-airflow-providers-google:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-06 11:16

Updated : 2026-07-08 14:53

NVD link : CVE-2026-49297

Mitre link : CVE-2026-49297

CVE.ORG link : CVE-2026-49297

JSON object : View

Products Affected

apache

apache-airflow-providers-google

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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