# CVE-2023-34121: Cross-site scripting in Zoom Rooms Client for Windows

> An authenticated user can exploit improper input validation in Zoom Windows clients to escalate privileges via network access.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/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:** 13 Jun 2023
- **Updated:** 2 Jan 2025
- **Also known as:** GHSA-3r5h-mjx6-6cjh

## What is CVE-2023-34121?

CVE-2023-34121 is a medium-severity cross-site scripting vulnerability in Zoom Rooms, published on 13 Jun 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

Improper input validation  in the Zoom for Windows, Zoom Rooms, Zoom VDI Windows Meeting  clients before 5.14.0  may allow an authenticated user to potentially enable an escalation of privilege  via network access.

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

## Which versions are affected by CVE-2023-34121?

It affects 3 products.


Products: Zoom Rooms, Zoom Virtual Desktop Infrastructure, Zoom Zoom.

## How do I fix CVE-2023-34121?

No fix has been published for CVE-2023-34121 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34121 being exploited?

There is no known exploitation of CVE-2023-34121 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Rooms

- [CVE-2023-39211](https://insights.sbomify.com/CVE-2023-39211/): Information disclosure in Zoom Desktop Client for Windows and Zoom Rooms for Windows (high 8.8)
- [CVE-2022-36926](https://insights.sbomify.com/CVE-2022-36926/): Local Privilege Escalation in Zoom Rooms for macOS Clients (high 8.8)
- [CVE-2022-36927](https://insights.sbomify.com/CVE-2022-36927/): Local Privilege Escalation in Zoom Rooms for macOS Clients (high 8.8)
- [CVE-2022-36930](https://insights.sbomify.com/CVE-2022-36930/): Local Privilege Escalation in Zoom Rooms for Windows Installers (high 8.8)
- [CVE-2022-36924](https://insights.sbomify.com/CVE-2022-36924/): Local Privilege Escalation in Zoom Rooms Installer for Windows (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34121 and fix it if it is affected.

What it is: CVE-2023-34121 is a medium-severity cross-site scripting vulnerability in Zoom Rooms, published on 13 Jun 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-34121 in the wild and no public exploit code.

Affected product: Zoom Rooms. 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-2023-34121/ (Markdown: https://insights.sbomify.com/CVE-2023-34121/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34121
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34121
- OSV: https://osv.dev/vulnerability/CVE-2023-34121

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34121/
Summaries are generated and may contain mistakes; the official description above is the record.