CVE-2026-40188— goshs is Missing Write Protection for Parametric Data Values
Quick assessment
Affected
patrickhener goshs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
goshs是Patrick Hener个人开发者的一个用Go编写的简单HTTP Server。 goshs 1.0.7至2.0.0-beta.4之前版本存在安全漏洞，该漏洞源于SFTP命令rename仅清理源路径而未清理目标路径，可能导致写入SFTP根目录之外。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-40188
Vulnerability Information
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Vulnerability Title
goshs is Missing Write Protection for Parametric Data Values
Source: CVE Program / CVE List V5
Vulnerability Description
goshs is a SimpleHTTPServer written in Go. From 1.0.7 to before 2.0.0-beta.4, the SFTP command rename sanitizes only the source path and not the destination, so it is possible to write outside of the root directory of the SFTP. This vulnerability is fixed in 2.0.0-beta.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1314
Source: CVE Program / CVE List V5
Vulnerability Title
goshs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
goshs是Patrick Hener个人开发者的一个用Go编写的简单HTTP Server。 goshs 1.0.7至2.0.0-beta.4之前版本存在安全漏洞，该漏洞源于SFTP命令rename仅清理源路径而未清理目标路径，可能导致写入SFTP根目录之外。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| patrickhener | goshs | >= 1.0.7, < 2.0.0-beta.4 | - |
|
II. Public POCs for CVE-2026-40188
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-40188 (1)
Vendor Advisories for CVE-2026-40188 (1)
Vendor Pages for CVE-2026-40188 (1)
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Release v2.0.0-beta.4 · patrickhener/goshs · GitHub x_refsource_MISC
IV. Related Vulnerabilities
Same product: goshs
-
CVE-2026-50139
goshs: Share-link ?token=… redemption races past download li -
CVE-2026-50138
goshs: WebDAV listener ignores --read-only, --upload-only, a -
CVE-2026-66064
goshs has ACL Bypass & Path Traversal -
CVE-2026-66063
goshs has a Path Traversal issue -
CVE-2026-64863
goshs --no-delete WebDAV MOVE bypass allows file deletion/ov
Same vendor: patrickhener
-
CVE-2026-50139
goshs: Share-link ?token=… redemption races past download li -
CVE-2026-50138
goshs: WebDAV listener ignores --read-only, --upload-only, a -
CVE-2026-42091
goshs has Cross-Origin Arbitrary File Write via Missing CSRF -
CVE-2026-40903
Goshs - ArtiPACKED Vulnerability – GitHub Actions Credential -
CVE-2026-40885
goshs: Public collaborator feed leaks .goshs ACL credentials
V. Comments for CVE-2026-40188
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