| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/drakkan/sftpgo | all versions | |
| github.com/drakkan/sftpgo/v2 | ≥ 2.3.0, < 2.7.1 | 2.7.1 |
| sftpgo | ≥ 2.3.0, < 2.7.1 | 2.7.1 |
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
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