# CVE-2020-35754: Code injection in n/a

> Authenticated users can inject code via Language tab inputs in Quick.CMS, leading to remote code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Jan 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-4wj8-83xp-85h6

## What is CVE-2020-35754?

CVE-2020-35754 is a high-severity code injection vulnerability in n/a, published on 28 Jan 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

OpenSolution Quick.CMS < 6.7 and Quick.Cart < 6.7 allow an authenticated user to perform code injection (and consequently Remote Code Execution) via the input fields of the Language tab.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2020-35754?

It affects 2 products.


Products: Opensolution Quick.cart, Opensolution Quick.cms.

## How do I fix CVE-2020-35754?

No fix has been published for CVE-2020-35754 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35754 being exploited?

There is no known exploitation of CVE-2020-35754 in the wild and no public exploit code.

Public exploit code:

- Quick.CMS 6.7 - Remote Code Execution (Authenticated) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2025-67684](https://insights.sbomify.com/CVE-2025-67684/): Remote Code Execution via Local File Inclusion in Quick.Cart (critical 9.4)
- [CVE-2026-23797](https://insights.sbomify.com/CVE-2026-23797/): Plaintext password display in Quick.Cart (medium 6.9)
- [CVE-2009-4120](https://insights.sbomify.com/CVE-2009-4120/): Cross-site request forgery in n/a (medium 6.8)
- [CVE-2025-67683](https://insights.sbomify.com/CVE-2025-67683/): Reflected XSS in Quick.Cart (medium 5.1)
- [CVE-2012-6049](https://insights.sbomify.com/CVE-2012-6049/): Information disclosure in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35754 and fix it if it is affected.

What it is: CVE-2020-35754 is a high-severity code injection vulnerability in n/a, published on 28 Jan 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-35754 in the wild and no public exploit code.

Affected product: n/a. 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-2020-35754/ (Markdown: https://insights.sbomify.com/CVE-2020-35754/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35754
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35754
- OSV: https://osv.dev/vulnerability/CVE-2020-35754

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35754/
Summaries are generated and may contain mistakes; the official description above is the record.