cvedb.io
CVE-2026-40189
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-04-10T20:16:23.890 · Last modified 2026-06-17T10:44:50.607

Summary

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.

Affected products

goshs — goshs

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.