# CVE-2020-8225: Information disclosure in Desktop Client

> Attackers can access proxy authentication credentials stored in cleartext by the Nextcloud Desktop Client, compromising sensitive network configuration data.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2020-8225, GHSA-j6gm-vwj7-5633, UBUNTU-CVE-2020-8225

## What is CVE-2020-8225?

CVE-2020-8225 is a high-severity vulnerability in Desktop Client, published on 18 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A cleartext storage of sensitive information in Nextcloud Desktop Client 2.6.4 gave away information about used proxies and their authentication credentials.

Weakness: CWE-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2020-8225?

It affects 1 product.


Products: Nextcloud Desktop.

## How do I fix CVE-2020-8225?

Upgrade to a fixed version.

## Is CVE-2020-8225 being exploited?

There is no known exploitation of CVE-2020-8225 in the wild and no public exploit code.

## Other vulnerabilities in Desktop Client

- [CVE-2024-46958](https://insights.sbomify.com/CVE-2024-46958/): Misconfiguration in n/a (critical 9.1)
- [CVE-2020-8224](https://insights.sbomify.com/CVE-2020-8224/): Code injection in Desktop Client (high 7.8)
- [CVE-2021-37617](https://insights.sbomify.com/CVE-2021-37617/): Untrusted Search Path in Nextcloud Desktop Client (high 7.3)
- [CVE-2023-28999](https://insights.sbomify.com/CVE-2023-28999/): Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders (medium 6.9)
- [CVE-2020-8227](https://insights.sbomify.com/CVE-2020-8227/): Path traversal in Desktop Client (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8225 and fix it if it is affected.

What it is: CVE-2020-8225 is a high-severity vulnerability in Desktop Client, published on 18 Sep 2020. 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-2020-8225 in the wild and no public exploit code.

Affected product: Desktop Client. 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-2020-8225/ (Markdown: https://insights.sbomify.com/CVE-2020-8225/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8225
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8225
- OSV: https://osv.dev/vulnerability/CVE-2020-8225

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8225/
Summaries are generated and may contain mistakes; the official description above is the record.