# CVE-2023-20096: Cisco Unified Contact Center Express Stored Cross-Site Scripting Vulnerability

> Authenticated attackers can inject scripts into the Cisco Unified CCX management interface, executing code in other users' browsers.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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:** 5 Apr 2023
- **Updated:** 25 Oct 2024
- **Also known as:** GHSA-4v5g-36mr-fcgx

## What is CVE-2023-20096?

CVE-2023-20096 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 5 Apr 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 in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an authenticated, remote attacker to perform a stored cross-site scripting (XSS) attack. This vulnerability is due to insufficient input validation of user-supplied data. An attacker could exploit this vulnerability by entering crafted text into various input fields within the web-based management interface. A successful exploit could allow the attacker to perform a stored XSS attack, which could allow the execution of scripts within the context of other users of the interface.

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

## Which versions are affected by CVE-2023-20096?

It affects 1 product.


Products: Cisco Unified Contact Center Express.

## How do I fix CVE-2023-20096?

No fix has been published for CVE-2023-20096 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-20096 being exploited?

There is no known exploitation of CVE-2023-20096 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Contact Center Express

- [CVE-2025-20354](https://insights.sbomify.com/CVE-2025-20354/): Cisco Unified Contact Center Express Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2020-3280](https://insights.sbomify.com/CVE-2020-3280/): Cisco Unified Contact Center Express Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2018-0403](https://insights.sbomify.com/CVE-2018-0403/): Information disclosure in Cisco Unified Contact Center Express unknown (critical 9.8)
- [CVE-2022-20658](https://insights.sbomify.com/CVE-2022-20658/): Privilege escalation in Cisco Unified Contact Center Domain Manager (critical 9.6)
- [CVE-2025-20358](https://insights.sbomify.com/CVE-2025-20358/): Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-20096 and fix it if it is affected.

What it is: CVE-2023-20096 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 5 Apr 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-2023-20096 in the wild and no public exploit code.

Affected product: Cisco Unified Contact Center Express. 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-2023-20096/ (Markdown: https://insights.sbomify.com/CVE-2023-20096/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-20096
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20096
- OSV: https://osv.dev/vulnerability/CVE-2023-20096

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-20096/
Summaries are generated and may contain mistakes; the official description above is the record.