# CVE-2020-27956: File upload in n/a

> An attacker can upload PHP files to the web root via the image upload component, leading to remote code execution.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hg78-9p95-85mv

## What is CVE-2020-27956?

CVE-2020-27956 is a critical vulnerability in n/a, published on 28 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An Arbitrary File Upload in the Upload Image component in SourceCodester Car Rental Management System 1.0 allows the user to conduct remote code execution via admin/index.php?page=manage_car because .php files can be uploaded to admin/assets/uploads/ (under the web root).

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2020-27956?

It affects 1 product.


Products: Car Rental Management System Project Car Rental Management System.

## How do I fix CVE-2020-27956?

No fix has been published for CVE-2020-27956 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27956 being exploited?

There is no known exploitation of CVE-2020-27956 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-32019](https://insights.sbomify.com/CVE-2022-32019/): File upload in n/a (critical 9.8)
- [CVE-2022-32020](https://insights.sbomify.com/CVE-2022-32020/): Code injection in n/a (critical 9.8)
- [CVE-2020-29227](https://insights.sbomify.com/CVE-2020-29227/): Path traversal in n/a (critical 9.8)
- [CVE-2020-29287](https://insights.sbomify.com/CVE-2020-29287/): SQL injection in n/a (critical 9.8)
- [CVE-2022-32021](https://insights.sbomify.com/CVE-2022-32021/): SQL injection in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27956 and fix it if it is affected.

What it is: CVE-2020-27956 is a critical vulnerability in n/a, published on 28 Oct 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-2020-27956 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-2020-27956/ (Markdown: https://insights.sbomify.com/CVE-2020-27956/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27956
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27956
- OSV: https://osv.dev/vulnerability/CVE-2020-27956

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27956/
Summaries are generated and may contain mistakes; the official description above is the record.