CVE-2026-40188

Name: CVE-2026-40188
Creator: NVD / NIST
Published: 2026-04-10T20:16:23.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2026-40188 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.7/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

EPSS Probability

0.32%

23.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1314

Affected Software

Vendor	Product	Versions	Update
Goshs	Goshs	>= 1.0.7, < 2.0.0	—
Goshs	Goshs	2.0.0	Beta1

References

https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744Patch
https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4Product, Release Notes
https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xxExploit, Vendor Advisory
https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xxExploit, Vendor Advisory

Timeline

Published: Apr 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40188?

How severe is CVE-2026-40188?

CVE-2026-40188 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40188?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40188?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST