# CVE-2022-4402: RainyGao DocSys ZIP File Decompression path traversal

> Remote attackers can exploit a path traversal vulnerability in the ZIP decompression handler to read or modify arbitrary files on the server.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Dec 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-6x8q-mcvj-v6v9

## What is CVE-2022-4402?

CVE-2022-4402 is a medium-severity path traversal vulnerability in RainyGao DocSys, published on 11 Dec 2022. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in RainyGao DocSys 2.02.37. This affects an unknown part of the component ZIP File Decompression Handler. The manipulation leads to path traversal: '../filedir'. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-215271.

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

## Which versions are affected by CVE-2022-4402?

It affects 1 product.


Products: Docsys Project Docsys.

## How do I fix CVE-2022-4402?

No fix has been published for CVE-2022-4402 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4402 being exploited?

There is no known exploitation of CVE-2022-4402 in the wild and no public exploit code.

## Other vulnerabilities in RainyGao DocSys

- [CVE-2025-15492](https://insights.sbomify.com/CVE-2025-15492/): RainyGao DocSys GroupMemberMapper.xml sql injection (medium 5.3)
- [CVE-2025-15493](https://insights.sbomify.com/CVE-2025-15493/): RainyGao DocSys ReposAuthMapper.xml sql injection (medium 5.3)
- [CVE-2025-15494](https://insights.sbomify.com/CVE-2025-15494/): RainyGao DocSys UserMapper.xml sql injection (medium 5.3)
- [CVE-2025-11629](https://insights.sbomify.com/CVE-2025-11629/): RainyGao DocSys getUserList.do getUserList sql injection (medium 5.3)
- [CVE-2025-11630](https://insights.sbomify.com/CVE-2025-11630/): RainyGao DocSys File Upload uploadDoc.do updateRealDoc path traversal (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4402 and fix it if it is affected.

What it is: CVE-2022-4402 is a medium-severity path traversal vulnerability in RainyGao DocSys, published on 11 Dec 2022. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-4402 in the wild and no public exploit code.

Affected product: RainyGao DocSys. 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-2022-4402/ (Markdown: https://insights.sbomify.com/CVE-2022-4402/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4402
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4402
- OSV: https://osv.dev/vulnerability/CVE-2022-4402

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4402/
Summaries are generated and may contain mistakes; the official description above is the record.