# CVE-2021-47850: Mini Mouse 9.2.0 - Path Traversal

> Remote attackers can access arbitrary system files and directories via crafted HTTP requests in Mini Mouse software.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Jan 2026
- **Updated:** 22 Jan 2026
- **Also known as:** GHSA-wm5x-fp7g-7vc3

## What is CVE-2021-47850?

CVE-2021-47850 is a high-severity path traversal vulnerability in Yodinfo Mini Mouse, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Mini Mouse 9.2.0 contains a path traversal vulnerability that allows remote attackers to access arbitrary system files and directories through crafted HTTP requests. Attackers can retrieve sensitive files like win.ini and list contents of system directories such as C:\Users\Public by manipulating file and path parameters.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-47850?

It affects 1 product.


Products: Yodinfo Mini Mouse.

## How do I fix CVE-2021-47850?

No fix has been published for CVE-2021-47850 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47850 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47850 exists.

## Other vulnerabilities in Yodinfo Mini Mouse

- [CVE-2021-47851](https://insights.sbomify.com/CVE-2021-47851/): Mini Mouse 9.2.0 - Remote Code Execution (critical 9.3)
- [CVE-2021-47849](https://insights.sbomify.com/CVE-2021-47849/): Mini Mouse 9.3.0 - Local File inclusion / Path Traversal (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47850 and fix it if it is affected.

What it is: CVE-2021-47850 is a high-severity path traversal vulnerability in Yodinfo Mini Mouse, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47850 exists.

Affected product: Yodinfo Mini Mouse. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-47850/ (Markdown: https://insights.sbomify.com/CVE-2021-47850/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47850
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47850
- OSV: https://osv.dev/vulnerability/CVE-2021-47850

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47850/
Summaries are generated and may contain mistakes; the official description above is the record.