PT-2026-32039 · Patrickhener · Goshs

Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-40189

NVD

CVSS v4.0

9.3

Critical

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.4, goshs enforces the documented per-folder .goshs ACL/basic-auth mechanism for directory listings and file reads, but it does not enforce the same authorization checks for state-changing routes. An unauthenticated attacker can upload files with PUT, upload files with multipart POST /upload, create directories with ?mkdir, and delete files with ?delete inside a .goshs-protected directory. By deleting the .goshs file itself, the attacker can remove the folder's auth policy and then access previously protected content without credentials. This results in a critical authorization bypass affecting confidentiality, integrity, and availability. This vulnerability is fixed in 2.0.0-beta.4.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-40189

Affected Products

Goshs

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40189 · Security Note
• https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx · Note
• https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4 · Note
• https://github.com/patrickhener/goshs/commit/f212c4f4a126556bab008f79758e21a839ef2c0f · Note