drakkan sftpgo up to 2.7.0 path traversal

Summaryinfo

A vulnerability marked as critical has been reported in drakkan sftpgo up to 2.7.0. This impacts an unknown function. This manipulation causes path traversal. The identification of this vulnerability is CVE-2026-30915. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in drakkan sftpgo up to 2.7.0. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

SFTPGo is an open source, event-driven file transfer solution. SFTPGo versions before v2.7.1 contain an input validation issue in the handling of dynamic group paths, for example, home directories or key prefixes. When a group is configured with a dynamic home directory or key prefix using placeholders like %username%, the value replacing the placeholder is not strictly sanitized against relative path components. Consequently, if a user is created with a specially crafted username the resulting path may resolve to a parent directory instead of the intended sub-directory. This issue is fixed in version v2.7.1

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-30915 since 03/07/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 2.7.1 eliminates this vulnerability.

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Productinfo

Vendor

• drakkan

Name

• sftpgo

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7.0

Website

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

CPE 2.3info

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CPE 2.2info

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