CVE-2026-40884

CRITICAL
INFO Priority: 0.05 BB Relevance: 80/100
Published: 2026-04-21 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
goshs goshs < 2.0.0
goshs goshs 2.0.0
goshs goshs 2.0.0
goshs goshs 2.0.0
goshs goshs 2.0.0
goshs goshs 2.0.0

References & Advisories (1)

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.48%
Raw Score 0.004780
Percentile 41.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00478
2026-10-28
0.00478

Intelligence Sources

nvd ref →