🛡️ CVE-2026-49818 — apache-airflow-providers-samba
Description
Apache Airflow has a Path Traversal issue
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.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.
Weakness class
CVE-2026-49818 is classified as CWE-22: Path Traversal. A file path built from user input is not confined to the intended directory, letting an attacker reach files elsewhere on the filesystem.
Affected software
CVE-2026-49818 is recorded against 2 packages.
- apache-airflow-providers-samba (fixed in 4.12.6)
- unknown
Timeline and source
Published on 9 June 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.
References
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
lists.apache.org (Web)
www.openwall.com (Web)
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| apache-airflow-providers-samba | — | 4.12.6 |
| unknown | — | — |
References
More CVE 2026 advisories
Browse all of CVE 2026 in the advisory index.
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