The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path o
The Apache Airflow Samba provider's GCSToSambaOperator joined GCS object names to the SMB destination path without a containment check, so an object named with ../ segments resolved a write path outside the configured destination_path. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within destination_path.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | apache-airflow-providers-samba | < 4.12.6 | 4.12.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-49818
- https://github.com/apache/airflow/pull/67857
- https://github.com/apache/airflow/commit/bc1df029af15cb1d35d5ca0d33bf9235500137cc
- https://github.com/apache/airflow
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow-providers-samba/PYSEC-2026-208.yaml
- https://lists.apache.org/thread/3vs0m3p51psgf54tts18d6336g24x3sf
- http://www.openwall.com/lists/oss-security/2026/06/09/8
- https://github.com/advisories/GHSA-f6vj-48fm-hmvx
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-22- Platform
- Python (PyPI)
- Package
apache-airflow-providers-samba- Disclosed
- 09.06.2026
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - GHSA-f6vj-48fm-hmvx - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-208 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: apache-airflow-providers-samba
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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