SFTP Command Rename Vulnerability in goshs by patrickhener
CVE-2026-40188

7.7HIGH

Key Information:

Vendor

Patrickhener

Status
Goshs
Vendor
CVE Published:
10 April 2026

What is CVE-2026-40188?

The goshs application, a SimpleHTTPServer written in Go, presents a vulnerability in its SFTP command rename function. With versions ranging from 1.0.7 up to, but not including, 2.0.0-beta.4, the rename command only sanitizes the source path, neglecting the destination path. This oversight allows potential attackers to write files outside of the designated root directory of the SFTP server, leading to possible unauthorized access or data exposure. The flaw has been rectified in version 2.0.0-beta.4.

Affected Version(s)

goshs >= 1.0.7, < 2.0.0-beta.4

References

https://github.com/patrickhener/goshs/security/advisories...
x_refsource_CONFIRM
https://github.com/patrickhener/goshs/commit/141c188ce270...
x_refsource_MISC
https://github.com/patrickhener/goshs/releases/tag/v2.0.0...
x_refsource_MISC

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.