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CVE-2026-49818— Apache Airflow Samba provider: Path traversal in GCSToSambaOperator via GCS object names

Quick assessment

Affected
Apache Software Foundation Apache Airflow Samba provider
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow Samba provider存在路径遍历漏洞，该漏洞源于GCSToSambaOperator将GCS对象名称连接到SMB目标路径时未进行包含检查，因此名为../段的对象名称解析到配置的destination_path之外的写入路径，能够将对象写入源GCS存储桶的攻击者可以在操作运行时将文件写入Samba目标上的任意位置。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.97% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Airflow Samba provider < 4.12.6 affected
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I. Basic Information for CVE-2026-49818

Vulnerability Information
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Vulnerability Title
Apache Airflow Samba provider: Path traversal in GCSToSambaOperator via GCS object names
Source: CVE Program / CVE List V5
Vulnerability 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`.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Airflow 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow Samba provider存在路径遍历漏洞，该漏洞源于GCSToSambaOperator将GCS对象名称连接到SMB目标路径时未进行包含检查，因此名为../段的对象名称解析到配置的destination_path之外的写入路径，能够将对象写入源GCS存储桶的攻击者可以在操作运行时将文件写入Samba目标上的任意位置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow Samba provider 0 ~ 4.12.6 -

II. Public POCs for CVE-2026-49818

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III. Intelligence Information for CVE-2026-49818

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Patches & Fixes for CVE-2026-49818 (1)

Mailing List Discussions for CVE-2026-49818 (1)

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IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-22

V. Comments for CVE-2026-49818

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