# CVE-2023-43647: baserCMS Cross-site Scripting vulnerability in File upload Feature

> Attackers can execute arbitrary scripts via the file upload feature in baserCMS, potentially compromising user sessions or site integrity.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 30 Oct 2023
- **Updated:** 6 Sep 2024
- **Also known as:** GHSA-ggj4-78rm-6xgv

## What is CVE-2023-43647?

CVE-2023-43647 is a medium-severity cross-site scripting vulnerability in Basercms Basercms, published on 30 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

baserCMS is a website development framework. Prior to version 4.8.0, there is a cross-site scripting vulnerability in the file upload feature of baserCMS. Version 4.8.0 contains a patch for this issue.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2023-43647?

2 open source packages ship an affected version, including baserproject/basercms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `baserproject/basercms` | Packagist | All versions | 4.8.0 |
| `baserproject/basercms` | Packagist | All versions | 4.8.0 |

Products: Basercms Basercms.

## How do I fix CVE-2023-43647?

Upgrade baserproject/basercms to 4.8.0 or later.

## Is CVE-2023-43647 being exploited?

There is no known exploitation of CVE-2023-43647 in the wild and no public exploit code.

## Other vulnerabilities in Basercms Basercms

- [CVE-2023-25654](https://insights.sbomify.com/CVE-2023-25654/): baserCMS File Uploader Remote Code Execution (RCE) vulnerability (critical 9.8)
- [CVE-2023-25655](https://insights.sbomify.com/CVE-2023-25655/): baserCMS allows any file to be uploaded (critical 9.8)
- [CVE-2017-10842](https://insights.sbomify.com/CVE-2017-10842/): baserCMS SQL Injection vulnerability (critical 9.8)
- [CVE-2026-30880](https://insights.sbomify.com/CVE-2026-30880/): baserCMS: OS command injection vulnerability in installer (critical 9.2)
- [CVE-2026-21861](https://insights.sbomify.com/CVE-2026-21861/): baserCMS: OS Command Injection Leading to Remote Code Execution (RCE) (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43647 and fix it if it is affected.

What it is: CVE-2023-43647 is a medium-severity cross-site scripting vulnerability in Basercms Basercms, published on 30 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-43647 in the wild and no public exploit code.

Affected packages and fixed versions:
- baserproject/basercms (Packagist): affected all versions; fixed in 4.8.0
- baserproject/basercms (Packagist): affected all versions; fixed in 4.8.0

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-2023-43647/ (Markdown: https://insights.sbomify.com/CVE-2023-43647/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43647
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43647
- OSV: https://osv.dev/vulnerability/CVE-2023-43647

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-43647/
Summaries are generated and may contain mistakes; the official description above is the record.