# CVE-2019-9886: eClass platform allows user to download arbitrary files without authentication

> Unauthenticated attackers can download arbitrary files from the eClass platform via path traversal in the attachment download script.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jul 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-33jr-73hp-7wxc

## What is CVE-2019-9886?

CVE-2019-9886 is a critical path traversal vulnerability in BroadLearning eclass, published on 11 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Any URLs with download_attachment.php under templates or home folders can allow arbitrary files downloaded without login in BroadLearning eClass before version ip.2.5.10.2.1.

Weakness: CWE-284 (Improper Access Control), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2019-9886?

It affects 1 product.


Products: Eclass Eclass Ip.

## How do I fix CVE-2019-9886?

No fix has been published for CVE-2019-9886 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-9886 being exploited?

There is no known exploitation of CVE-2019-9886 in the wild and no public exploit code.

## Other vulnerabilities in BroadLearning eclass

- [CVE-2019-9884](https://insights.sbomify.com/CVE-2019-9884/): eClass platform contains a Broken Access Control vulnerability (critical 9.8)
- [CVE-2019-9885](https://insights.sbomify.com/CVE-2019-9885/): eClass platform contains a SQL injection vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-9886 and fix it if it is affected.

What it is: CVE-2019-9886 is a critical path traversal vulnerability in BroadLearning eclass, published on 11 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-9886 in the wild and no public exploit code.

Affected product: BroadLearning eclass. 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-2019-9886/ (Markdown: https://insights.sbomify.com/CVE-2019-9886/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-9886
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-9886
- OSV: https://osv.dev/vulnerability/CVE-2019-9886

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-9886/
Summaries are generated and may contain mistakes; the official description above is the record.