# CVE-2021-22685: Cassia Networks Access Controller Path Traversal

> An attacker can view arbitrary files on the Cassia Networks Access Controller via a path traversal vulnerability in the minify route.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-95fj-76m5-w4rc

## What is CVE-2021-22685?

CVE-2021-22685 is a medium-severity path traversal vulnerability in Cassia Networks Access Controller, published on 14 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An attacker may be able to use minify route with a relative path to view any file on the Cassia Networks Access Controller prior to 2.0.1.

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

## Which versions are affected by CVE-2021-22685?

It affects 1 product.


Products: Cassianetworks Access Controller.

## How do I fix CVE-2021-22685?

No fix has been published for CVE-2021-22685 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22685 being exploited?

There is no known exploitation of CVE-2021-22685 in the wild and no public exploit code.

## Other vulnerabilities in Cassia Networks Access Controller

- [CVE-2023-35794](https://insights.sbomify.com/CVE-2023-35794/): Auth bypass in n/a (high 8.8)
- [CVE-2023-35793](https://insights.sbomify.com/CVE-2023-35793/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2023-31445](https://insights.sbomify.com/CVE-2023-31445/): Information disclosure in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22685 and fix it if it is affected.

What it is: CVE-2021-22685 is a medium-severity path traversal vulnerability in Cassia Networks Access Controller, published on 14 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22685 in the wild and no public exploit code.

Affected product: Cassia Networks Access Controller. 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-2021-22685/ (Markdown: https://insights.sbomify.com/CVE-2021-22685/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22685
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22685
- OSV: https://osv.dev/vulnerability/CVE-2021-22685

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22685/
Summaries are generated and may contain mistakes; the official description above is the record.