critical9.8
CVE-2026-40884
goshs has an empty-username SFTP password authentication bypass
Impact
goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the documented empty-username basic-auth syntax is used. If the server is started with -b ':pass' together with -sftp, goshs accepts that configuration but does not install any SFTP password handler. As a result, an unauthenticated network attacker can connect to the SFTP service and access files without a password. This vulnerability is fixed in 2.0.0-beta.6.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/patrickhener/goshs | <= 1.1.4 | none recorded |
| go | github.com/patrickhener/goshs/v2 | < 2.0.0 | 2.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Goshs | Goshs | before 2.0.0 Version 2.0.0 |