CVE-2026-40188
goshs is Missing Write Protection for Parametric Data Values
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.
INFO
Published Date :
April 10, 2026, 8:16 p.m.
Last Modified :
April 14, 2026, 8:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update goshs to version 2.0.0-beta.4 or later.
- Ensure destination path sanitization is enforced.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40188.
| URL | Resource |
|---|---|
| https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744 | Patch |
| https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4 | Product Release Notes |
| https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx | Exploit Vendor Advisory |
| https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40188 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40188
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40188 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40188 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:goshs:goshs:2.0.0:beta1:*:*:*:go:*:* *cpe:2.3:a:goshs:goshs:2.0.0:beta2:*:*:*:go:*:* *cpe:2.3:a:goshs:goshs:2.0.0:beta3:*:*:*:go:*:* *cpe:2.3:a:goshs:goshs:*:*:*:*:*:go:*:* versions from (including) 1.0.7 up to (excluding) 2.0.0 Added Reference Type GitHub, Inc.: https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4 Types: Product, Release Notes Added Reference Type CISA-ADP: https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx -
New CVE Received by [email protected]
Apr. 10, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N Added CWE CWE-1314 Added Reference https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744 Added Reference https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4 Added Reference https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx