# CVE-2023-49296: Arduino Create Agent vulnerable to Reflected Cross-Site Scripting

> An attacker can execute arbitrary browser client-side code via reflected XSS in the Arduino Create Agent web interface by tricking a user into clicking a malicious link.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L`)
- **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:** No
- **Published:** 13 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-j5hc-wx84-844h

## What is CVE-2023-49296?

CVE-2023-49296 is a medium-severity cross-site scripting vulnerability in arduino-create-agent, published on 13 Dec 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

The Arduino Create Agent allows users to use the Arduino Create applications to upload code to any USB connected Arduino board directly from the browser. A vulnerability in versions prior to 1.3.6 affects the endpoint `/certificate.crt` and the way the web interface of the ArduinoCreateAgent handles custom error messages. An attacker that is able to persuade a victim into clicking on a malicious link can perform a Reflected Cross-Site Scripting attack on the web interface of the create agent, which would allow the attacker to execute arbitrary browser client side code. Version 1.3.6 contains a fix for the issue.

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

## Which versions are affected by CVE-2023-49296?

It affects 1 product.


Products: Arduino Create Agent.

## How do I fix CVE-2023-49296?

No fix has been published for CVE-2023-49296 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49296 being exploited?

There is no known exploitation of CVE-2023-49296 in the wild and no public exploit code.

## Other vulnerabilities in arduino-create-agent

- [CVE-2023-43800](https://insights.sbomify.com/CVE-2023-43800/): Insufficient Verification of Data Authenticity in Arduino Create Agent (high 7.3)
- [CVE-2023-43802](https://insights.sbomify.com/CVE-2023-43802/): Path traversal in Arduino Create Agent (high 7.1)
- [CVE-2023-43801](https://insights.sbomify.com/CVE-2023-43801/): Path traversal in Arduino Create Agent (medium 6.1)
- [CVE-2023-43803](https://insights.sbomify.com/CVE-2023-43803/): Path traversal in Arduino Create Agent (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49296 and fix it if it is affected.

What it is: CVE-2023-49296 is a medium-severity cross-site scripting vulnerability in arduino-create-agent, published on 13 Dec 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-2023-49296 in the wild and no public exploit code.

Affected product: arduino-create-agent. 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-2023-49296/ (Markdown: https://insights.sbomify.com/CVE-2023-49296/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49296
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49296
- OSV: https://osv.dev/vulnerability/CVE-2023-49296

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49296/
Summaries are generated and may contain mistakes; the official description above is the record.