# CVE-2016-5819: Cross-site scripting in OnCell G3100V2 Series

> Reflected cross-site scripting in Moxa industrial gateways allows attackers to execute arbitrary scripts in user browsers.

- **Severity:** Medium 6.1 (`CVSS:3.0/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:** No
- **Published:** 21 Mar 2019
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-jw53-g5p8-77fr

## What is CVE-2016-5819?

CVE-2016-5819 is a medium-severity cross-site scripting vulnerability in Moxa OnCell G3100V2 Series, published on 21 Mar 2019. 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

Moxa G3100V2 Series, editions prior to Version 2.8, and OnCell G3111/G3151/G3211/G3251 Series, editions prior to Version 1.7 allows a reflected cross-site scripting attack which may allow an attacker to execute arbitrary script code in the user’s browser within the trust relationship between their browser and the server.

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

## Which versions are affected by CVE-2016-5819?

It affects 5 products.


Products: Moxa Oncell G3100v2 Firmware, Moxa Oncell G3111 Firmware, Moxa Oncell G3151 Firmware, Moxa Oncell G3211 Firmware, Moxa Oncell G3251 Firmware.

## How do I fix CVE-2016-5819?

No fix has been published for CVE-2016-5819 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-5819 being exploited?

There is no known exploitation of CVE-2016-5819 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-5819 and fix it if it is affected.

What it is: CVE-2016-5819 is a medium-severity cross-site scripting vulnerability in Moxa OnCell G3100V2 Series, published on 21 Mar 2019. 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-2016-5819 in the wild and no public exploit code.

Affected product: Moxa OnCell G3100V2 Series. 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-2016-5819/ (Markdown: https://insights.sbomify.com/CVE-2016-5819/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-5819
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-5819
- OSV: https://osv.dev/vulnerability/CVE-2016-5819

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-5819/
Summaries are generated and may contain mistakes; the official description above is the record.