# CVE-2023-6313: SourceCodester URL Shortener Long URL cross site scripting

> Remote attackers can inject malicious scripts via the Long URL field in SourceCodester URL Shortener, potentially compromising user sessions.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 27 Nov 2023
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-q666-2pvx-pm2j

## What is CVE-2023-6313?

CVE-2023-6313 is a low-severity cross-site scripting vulnerability in SourceCodester URL Shortener, published on 27 Nov 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was found in SourceCodester URL Shortener 1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Long URL Handler. The manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-246139.

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

## Which versions are affected by CVE-2023-6313?

It affects 1 product.


Products: Url Shortener Project Url Shortener.

## How do I fix CVE-2023-6313?

No fix has been published for CVE-2023-6313 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6313 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6313 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6313 and fix it if it is affected.

What it is: CVE-2023-6313 is a low-severity cross-site scripting vulnerability in SourceCodester URL Shortener, published on 27 Nov 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6313 exists.

Affected product: SourceCodester URL Shortener. 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-2023-6313/ (Markdown: https://insights.sbomify.com/CVE-2023-6313/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6313
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6313
- OSV: https://osv.dev/vulnerability/CVE-2023-6313

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6313/
Summaries are generated and may contain mistakes; the official description above is the record.