medium6.9
CVE-2026-30915
SFTPGo improperly sanitizes placeholders in group home directories/key prefixes
Impact
### Impact 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. ### Patches This issue is fixed in version v2.7.1
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/drakkan/sftpgo/v2 | >= 2.3.0, <= 2.7.0 | 2.7.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sftpgo Project | Sftpgo | from 2.3.0 before 2.7.1 |