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CVE-2026-40883— goshs: CSRF in state-changing GET routes enables authenticated file deletion and directory creation

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，该漏洞源于状态变更的HTTP GET路由缺乏CSRF、Origin或Referer验证，可能导致外部攻击者触发已认证浏览器执行破坏性操作。

AI Predicted 6.5 Difficulty: Easy EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1556.004 · Network Device Authentication
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I. Basic Information for CVE-2026-40883

Vulnerability Information
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Vulnerability Title
goshs: CSRF in state-changing GET routes enables authenticated file deletion and directory creation
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 contains a cross-site request forgery issue in its state-changing HTTP GET routes. An external attacker can cause an already authenticated browser to trigger destructive actions such as ?delete and ?mkdir because goshs relies on HTTP basic auth alone and performs no CSRF, Origin, or Referer validation for those routes. 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:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
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，该漏洞源于状态变更的HTTP GET路由缺乏CSRF、Origin或Referer验证，可能导致外部攻击者触发已认证浏览器执行破坏性操作。
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-2026-40883

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III. Intelligence Information for CVE-2026-40883

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Vendor Advisories for CVE-2026-40883 (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-2026-40885 goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized acce

IV. Related Vulnerabilities

Same product: goshs
Same vendor: patrickhener
Same weakness: CWE-352

V. Comments for CVE-2026-40883

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