# CVE-2024-8707: 云课网络科技有限公司 Yunke Online School System Appadmin.php downfile path traversal

> Remote attackers can exploit a path traversal vulnerability in the downfile function to read arbitrary files from the server.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2024
- **Updated:** 12 Sep 2024
- **Also known as:** GHSA-55vj-qfc7-jrjc

## What is CVE-2024-8707?

CVE-2024-8707 is a medium-severity path traversal vulnerability in 云课网络科技有限公司 Yunke Online School System, published on 12 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in 云课网络科技有限公司 Yunke Online School System up to 3.0.6. It has been declared as problematic. This vulnerability affects the function downfile of the file application/admin/controller/Appadmin.php. The manipulation of the argument url leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

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

## Which versions are affected by CVE-2024-8707?


## How do I fix CVE-2024-8707?

No fix has been published for CVE-2024-8707 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-8707 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8707 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-8707 and fix it if it is affected.

What it is: CVE-2024-8707 is a medium-severity path traversal vulnerability in 云课网络科技有限公司 Yunke Online School System, published on 12 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8707 exists.

Affected product: 云课网络科技有限公司 Yunke Online School System. 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-2024-8707/ (Markdown: https://insights.sbomify.com/CVE-2024-8707/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-8707
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-8707
- OSV: https://osv.dev/vulnerability/CVE-2024-8707

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-8707/
Summaries are generated and may contain mistakes; the official description above is the record.