Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP root escape caused by prefix-based path validation. An authenticated SFTP user can read from and write to filesystem paths outside the configured SFTP root, which breaks the intended jail boundary and can expose or modify unrelated server files. The SFTP subsystem routes requests through sftpserver/sftpserver.go into DefaultHandler.GetHandler() in sftpserver/handler.go, which forwards file operations into readFile, writeFile, listFile, and cmdFile. All of those sinks rely on sanitizePath() in sftpserver/helper.go. helper.go uses a raw string-prefix comparison, not a directory-boundary check. Because of that, if the configured root is /tmp/goshsroot, then a sibling path such as /tmp/goshsroot_evil/secret.txt incorrectly passes validation since it starts with the same byte prefix. This vulnerability is fixed in 2.0.0-beta.6.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
CVE-2026-40876 SFTP Root Escape via Prefix-Based Path Validation in goshs Before 2.0.0-beta.6 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-40876
Post summary
The text announces a newly identified CVE-2026-40876 in goshs, describing a root‑escape flaw in its SFTP service; it provides basic technical detail but no exploitation evidence or remediation info.
6 of 6 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | goshs | goshs | - | go | - |
| App | goshs | goshs | 2.0.0 | go | - |
| App | goshs | goshs | 2.0.0 | go | - |
| App | goshs | goshs | 2.0.0 | go | - |
| App | goshs | goshs | 2.0.0 | go | - |
| App | goshs | goshs | 2.0.0 | go | - |