CVE-2026-49818

medium Apache
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.2%
Exploitation probability in 30 days
Top 61% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: June 9, 2026 (30 days ago)
Last Modified: June 12, 2026
Vendor: Apache
Source: NVD

Description

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`.

CWE

CWE-22

Affected Products

apache apache-airflow-providers-samba

References

🔗 github.com 🔗 lists.apache.org 🔗 www.openwall.com