PT-2026-33233 · Goshs · Goshs

R1Zzg0D · Published 2026-04-14 · Updated 2026-04-27 · CVE-2026-40884

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions goshs version v2.0.0-beta.5

Description An authentication bypass exists in the SFTP service when the server is configured using the basic authentication syntax with an empty username, such as using the -b variable with the format ':pass'. In this configuration, the software fails to install an SFTP password handler, allowing an unauthenticated network attacker to connect to the SFTP service and access files without providing a password. This can lead to unauthorized reading, uploading, renaming, and deleting of files within the configured SFTP root.

Recommendations For version v2.0.0-beta.5, avoid using the -b variable with an empty username (e.g., ':pass') when the -sftp option is enabled to prevent unauthenticated access.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-40884

GHSA-C29W-QQ4M-2GCV

Affected Products

Goshs

References · 7

• 🔥 https://github.com/patrickhener/goshs/security/advisories/GHSA-c29w-qq4m-2gcv · Exploit
• https://osv.dev/vulnerability/GHSA-c29w-qq4m-2gcv · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40884 · Security Note
• https://github.com/patrickhener/goshs · Note
• https://t.me/cveNotify/161106 · Telegram Post
• https://twitter.com/the_yellow_fall/status/2044756191453032599 · Twitter Post
• https://twitter.com/pulsepatchio/status/2044620762917560672 · Twitter Post