# CVE-2020-36771: Information disclosure in cagefs

> Local users can view authentication tokens in the process list to gain code execution as another user in specific configurations.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Jan 2024
- **Updated:** 20 Jun 2025
- **Also known as:** GHSA-v7gp-f4wc-h5w4

## What is CVE-2020-36771?

CVE-2020-36771 is a high-severity vulnerability in Cloudlinux OS cagefs, published on 22 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

CloudLinux CageFS 7.1.1-1 or below passes the authentication token as a command line argument. In some configurations this allows local users to view the authentication token via the process list and gain code execution as another user.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-214 (Invocation of Process Using Visible Sensitive Information)

## Which versions are affected by CVE-2020-36771?

It affects 1 product.


Products: Cloudlinux Cagefs.

## How do I fix CVE-2020-36771?

No fix has been published for CVE-2020-36771 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36771 being exploited?

There is no known exploitation of CVE-2020-36771 in the wild and no public exploit code.

## Other vulnerabilities in Cloudlinux OS cagefs

- [CVE-2020-36772](https://insights.sbomify.com/CVE-2020-36772/): Path traversal in cagefs (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36771 and fix it if it is affected.

What it is: CVE-2020-36771 is a high-severity vulnerability in Cloudlinux OS cagefs, published on 22 Jan 2024. 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-2020-36771 in the wild and no public exploit code.

Affected product: Cloudlinux OS cagefs. 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-2020-36771/ (Markdown: https://insights.sbomify.com/CVE-2020-36771/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36771
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36771
- OSV: https://osv.dev/vulnerability/CVE-2020-36771

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-36771/
Summaries are generated and may contain mistakes; the official description above is the record.