# CVE-2026-20116: Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

> Unauthenticated attackers can inject malicious scripts into Cisco Contact Center web interfaces, allowing arbitrary code execution or data theft in user browsers.

- **Severity:** Medium 6.1 (`CVSS:3.1/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:** 11 Mar 2026
- **Updated:** 11 Mar 2026
- **Also known as:** GHSA-vh2r-jfvr-qvg8

## What is CVE-2026-20116?

CVE-2026-20116 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 11 Mar 2026. 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

A vulnerability in the web-based management interface of  Cisco Finesse, Cisco Packaged Contact Center Enterprise (Packaged CCE), Cisco Unified Contact Center Enterprise (Unified CCE), Cisco Unified Contact Center Express (Unified CCX), and Cisco Unified Intelligence Center could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface.

This vulnerability exists because the web-based management interface of an affected system does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

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

## Which versions are affected by CVE-2026-20116?


## How do I fix CVE-2026-20116?

No fix has been published for CVE-2026-20116 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20116 being exploited?

There is no known exploitation of CVE-2026-20116 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20116 and fix it if it is affected.

What it is: CVE-2026-20116 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 11 Mar 2026. 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-2026-20116 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-2026-20116/ (Markdown: https://insights.sbomify.com/CVE-2026-20116/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20116
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20116
- OSV: https://osv.dev/vulnerability/CVE-2026-20116

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20116/
Summaries are generated and may contain mistakes; the official description above is the record.