drakkan SFTPGo up to 2.7.2 Public Web-Client Partial ZIP Download Endpoint path traversal

Summaryinfo

A vulnerability was found in drakkan SFTPGo up to 2.7.2. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Public Web-Client Partial ZIP Download Endpoint. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-49244. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in drakkan SFTPGo up to 2.7.2. It has been rated as problematic. This issue affects an unknown code block of the component Public Web-Client Partial ZIP Download Endpoint. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

SFTPGo is an open source, event-driven file transfer solution. From 2.2.0 until 2.7.3, the public web-client partial ZIP download endpoint for a browsable share validates client-supplied files entries with a raw byte-prefix comparison rather than a directory-boundary-aware check. An unauthenticated requester who can reach a public share can select a canonical path outside the shared directory when the target path begins with the shared directory's name, such as a sibling path that shares the same prefix. The endpoint then includes the out-of-scope file in the generated download, disclosing its contents. This issue is fixed in version 2.7.3.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-49244 since 05/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 2.7.3 eliminates this vulnerability.

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Productinfo

Vendor

• drakkan

Name

• SFTPGo

Version

• 2.7.0
• 2.7.1
• 2.7.2

Website

• Product: https://github.com/drakkan/sftpgo/

CPE 2.3info

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CPE 2.2info

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