# CVE-2020-36899: QiHang Media Web Digital Signage 3.0.9 Unauthenticated Arbitrary File Disclosure

> Remote attackers can read arbitrary files and directory contents without authentication by manipulating parameters in the QH.aspx endpoint.

- **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:** 10 Dec 2025
- **Updated:** 11 Dec 2025
- **Also known as:** GHSA-2fqg-hhc5-9x33

## What is CVE-2020-36899?

CVE-2020-36899 is a high-severity path traversal vulnerability in Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage, published on 10 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated file disclosure vulnerability that allows remote attackers to access sensitive files through unverified 'filename' and 'path' parameters. Attackers can exploit the QH.aspx endpoint to read arbitrary files and directory contents without authentication by manipulating download and getAll actions.

Weakness: CWE-530 (Exposure of Backup File to an Unauthorized Control Sphere)

## Which versions are affected by CVE-2020-36899?

It affects 1 product.


Products: Howfor Qihang Media Web Digital Signage.

## How do I fix CVE-2020-36899?

No fix has been published for CVE-2020-36899 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36899 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36899 exists.

## Other vulnerabilities in Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage

- [CVE-2020-36897](https://insights.sbomify.com/CVE-2020-36897/): QiHang Media Web Digital Signage 3.0.9 Unauthenticated Remote Code Execution (critical 9.3)
- [CVE-2020-36898](https://insights.sbomify.com/CVE-2020-36898/): QiHang Media Web Digital Signage 3.0.9 Unauthenticated Arbitrary File Deletion (high 8.8)
- [CVE-2020-36896](https://insights.sbomify.com/CVE-2020-36896/): QiHang Media Web Digital Signage 3.0.9 Cleartext Credentials Disclosure (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36899 and fix it if it is affected.

What it is: CVE-2020-36899 is a high-severity path traversal vulnerability in Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage, published on 10 Dec 2025. 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-2020-36899 exists.

Affected product: Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage. 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-2020-36899/ (Markdown: https://insights.sbomify.com/CVE-2020-36899/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36899
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36899
- OSV: https://osv.dev/vulnerability/CVE-2020-36899

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36899/
Summaries are generated and may contain mistakes; the official description above is the record.