# CVE-2018-0400: Cross-site scripting in Cisco Unified Contact Center Express unknown

> Unauthenticated remote attackers can execute cross-site scripting attacks against users of the Cisco Unified Contact Center Express web interface.

- **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:** 18 Jul 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-3pvm-hf79-jr5w

## What is CVE-2018-0400?

CVE-2018-0400 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express unknown, published on 18 Jul 2018. 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

Multiple vulnerabilities in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. Cisco Bug IDs: CSCvg70904.

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

## Which versions are affected by CVE-2018-0400?

It affects 2 products.


Products: Cisco Unified Contact Center Express, Cisco Unified Ip Interactive Voice Response.

## How do I fix CVE-2018-0400?

No fix has been published for CVE-2018-0400 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0400 being exploited?

There is no known exploitation of CVE-2018-0400 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Contact Center Express unknown

- [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-2018-0400 and fix it if it is affected.

What it is: CVE-2018-0400 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express unknown, published on 18 Jul 2018. 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-2018-0400 in the wild and no public exploit code.

Affected product: Cisco Unified Contact Center Express unknown. 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-2018-0400/ (Markdown: https://insights.sbomify.com/CVE-2018-0400/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0400
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0400
- OSV: https://osv.dev/vulnerability/CVE-2018-0400

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0400/
Summaries are generated and may contain mistakes; the official description above is the record.