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CVE-2026-40885— goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access

Quick assessment

Affected
patrickhener goshs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

goshs是Patrick Hener个人开发者的一个用Go编写的简单HTTP Server。 goshs 2.0.0-beta.4至2.0.0-beta.5版本存在安全漏洞，该漏洞源于在未部署全局基本身份验证时，协作WebSocket广播原始请求标头，可能导致未经身份验证的观察者捕获并重放受害者特定文件夹的基本身份验证标头。

AI Predicted 9.1 Difficulty: Easy EPSS 0.45% · P37
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I. Basic Information for CVE-2026-40885

Vulnerability Information
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Vulnerability Title
goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access
Source: CVE Program / CVE List V5
Vulnerability Description
goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs leaks file-based ACL credentials through its public collaborator feed when the server is deployed without global basic auth. Requests to .goshs-protected folders are logged before authorization is enforced, and the collaborator websocket broadcasts raw request headers, including Authorization. An unauthenticated observer can capture a victim's folder-specific basic-auth header and replay it to read, upload, overwrite, and delete files inside the protected subtree. This vulnerability is fixed in 2.0.0-beta.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
goshs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
goshs是Patrick Hener个人开发者的一个用Go编写的简单HTTP Server。 goshs 2.0.0-beta.4至2.0.0-beta.5版本存在安全漏洞，该漏洞源于在未部署全局基本身份验证时，协作WebSocket广播原始请求标头，可能导致未经身份验证的观察者捕获并重放受害者特定文件夹的基本身份验证标头。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
patrickhener goshs >= 2.0.0-beta.4, < 2.0.0-beta.6 -

II. Public POCs for CVE-2026-40885

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III. Intelligence Information for CVE-2026-40885

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Vendor Advisories for CVE-2026-40885 (1)

Same Patch Batch · patrickhener · 2026-04-21 · 5 CVEs total

CVE-2026-40884 9.8 CRITICAL goshs: Empty-username SFTP password authentication bypass in goshs
CVE-2026-40903 9.1 CRITICAL Goshs - ArtiPACKED Vulnerability – GitHub Actions Credential Persistence
CVE-2026-40876 SFTP root escape via prefix-based path validation in goshs
CVE-2026-40883 goshs: CSRF in state-changing GET routes enables authenticated file deletion and directory

IV. Related Vulnerabilities

Same product: goshs
Same vendor: patrickhener
Same weakness: CWE-200

V. Comments for CVE-2026-40885

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