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Vulnerability record · CVE-2026-40188 · published 10 April 2026

CVE-2026-40188: Goshs vulnerability

Goshs · Goshs

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.

7.7 CVSS 3.1 High EPSS 0.39% · top 69.7% CWE-1314 · CWE-1314
7.7CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744 Patch
https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4 ProductRelease Notes
https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx ExploitVendor Advisory
https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-40884Goshs missing authentication for critical function vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the documented empty-username bas…EPSS 0.65%9.8CVE-2026-35471Goshs path traversal vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.3, tdeleteFile() missing return after path traversal check. This vulnerability is fixe…EPSS 0.69%9.8CVE-2026-35392Goshs path traversal vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.3, PUT upload in httpserver/updown.go has no path sanitization. This vulnerability is …EPSS 0.69%9.8CVE-2026-35393Goshs path traversal vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.3, the POST multipart upload directory not sanitized. This vulnerability is fixed in 2…EPSS 0.69%9.3CVE-2026-40189Goshs missing authorization vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.4, goshs enforces the documented per-folder .goshs ACL/basic-auth mechanism for direct…EPSS 0.66%9.1CVE-2026-40903Goshs inclusion from untrusted sphere vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs has an ArtiPACKED vulnerability. ArtiPACKED can lead to leakage of the GITHUB…EPSS 0.43%8.7CVE-2026-40876Goshs path traversal vulnerabilitygoshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP root escape caused by prefix-based path validation. An authe…EPSS 0.59%8.1CVE-2026-34581Goshs authentication bypass via alternate path vulnerabilitygoshs is a SimpleHTTPServer written in Go. From version 1.1.0 to before version 2.0.0-beta.2, when using the Share Token it is possible to bypass the…EPSS 0.45%

Source: NIST National Vulnerability Database (record CVE-2026-40188), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.