CVE-2026-40884

CriticalCVSS 9.8/10Last modified Oct 26, 2026

Description

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the documented empty-username basic-auth syntax is used. If the server is started with -b ':pass' together with -sftp, goshs accepts that configuration but does not install any SFTP password handler. As a result, an unauthenticated network attacker can connect to the SFTP service and access files without a password. This vulnerability is fixed in 2.0.0-beta.6.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-306

Affected software

Vendor	Product	Versions
patrickhener	goshs	< 2.0.0-beta.6

References

https://github.com/patrickhener/goshs/security/advisories/GHSA-c29w-qq4m-2gcvExploit, Vendor Advisory
https://github.com/patrickhener/goshs/security/advisories/GHSA-c29w-qq4m-2gcvExploit, Vendor Advisory

Timeline

Published: Apr 21, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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