CVE-2026-40884: Goshs

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Goshs Goshs: before 2.0.0 (fixed in 2.0.0); version 2.0.0 only

Published 2026-04-21. Last modified 2026-06-17.