CVE-2026-40189

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/patrickhener/goshs/commit/f212c4f4a126556bab008f79758e21a839ef2c0f	Patch
https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4	Product Release Notes
https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx	Exploit Mitigation Vendor Advisory
https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:goshs:goshs::::::go::*
	cpe:2.3:a:goshs:goshs:2.0.0:beta1::::go::*
	cpe:2.3:a:goshs:goshs:2.0.0:beta2::::go::*
	cpe:2.3:a:goshs:goshs:2.0.0:beta3::::go::*

History

No history.

Information

Published : 2026-04-10 20:16

Updated : 2026-06-17 10:44

NVD link : CVE-2026-40189

Mitre link : CVE-2026-40189

CVE.ORG link : CVE-2026-40189

JSON object : View

Products Affected

goshs

goshs

CWE

CWE-862

Missing Authorization

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