# CVE-2024-3850: Uniview NVR301-04S2-P4 Cross-site Scripting

> An authenticated attacker can execute malicious JavaScript in a victim's browser via a crafted URL on Uniview NVR devices.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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:** 10 Jun 2024
- **Updated:** 26 Aug 2024
- **Also known as:** GHSA-r4pf-fm74-w9rw

## What is CVE-2024-3850?

CVE-2024-3850 is a medium-severity cross-site scripting vulnerability in Uniview NVR301-04S2-P4, published on 10 Jun 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Uniview NVR301-04S2-P4 is vulnerable to reflected cross-site scripting attack (XSS). An attacker could send a user a URL that if clicked on could execute malicious JavaScript in their browser. This vulnerability also requires authentication before it can be exploited, so the scope and severity is limited. Also, even if JavaScript is executed, no additional benefits are obtained.

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

## Which versions are affected by CVE-2024-3850?

It affects 1 product.


Products: Uniview Nvr301-04s2-P4 Firmware.

## How do I fix CVE-2024-3850?

No fix has been published for CVE-2024-3850 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-3850 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3850 exists.

Public exploit code:

- Uniview NVR301-04S2-P4 - Cross-Site Scripting (nuclei): http/cves/2024/CVE-2024-3850.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3850 and fix it if it is affected.

What it is: CVE-2024-3850 is a medium-severity cross-site scripting vulnerability in Uniview NVR301-04S2-P4, published on 10 Jun 2024. 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-2024-3850 exists.

Affected product: Uniview NVR301-04S2-P4. 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-2024-3850/ (Markdown: https://insights.sbomify.com/CVE-2024-3850/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3850
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3850
- OSV: https://osv.dev/vulnerability/CVE-2024-3850

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-3850/
Summaries are generated and may contain mistakes; the official description above is the record.