# CVE-2025-20353: Cisco Catalyst Center Cross-Site Scripting Vulnerability

> An unauthenticated attacker can execute arbitrary scripts or access sensitive data by tricking a user into clicking a crafted link in the Cisco Catalyst Center interface.

- **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:** 13 Nov 2025
- **Updated:** 13 Nov 2025
- **Also known as:** GHSA-cvh7-25fm-227j

## What is CVE-2025-20353?

CVE-2025-20353 is a medium-severity cross-site scripting vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 13 Nov 2025. 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 Catalyst Center could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device.

This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. 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-2025-20353?

It affects 1 product.


Products: Cisco Catalyst Center.

## How do I fix CVE-2025-20353?

No fix has been published for CVE-2025-20353 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20353 being exploited?

There is no known exploitation of CVE-2025-20353 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Digital Network Architecture Center (DNA Center)

- [CVE-2021-1264](https://insights.sbomify.com/CVE-2021-1264/): Cisco DNA Center Command Runner Command Injection Vulnerability (critical 9.6)
- [CVE-2023-20055](https://insights.sbomify.com/CVE-2023-20055/): Cisco DNA Center Privilege Escalation Vulnerability (high 8.0)
- [CVE-2021-1265](https://insights.sbomify.com/CVE-2021-1265/): Cisco DNA Center Information Disclosure Vulnerability (high 7.7)
- [CVE-2026-20191](https://insights.sbomify.com/CVE-2026-20191/): Cisco Catalyst Center Arbitrary File Read Vulnerability (high 7.5)
- [CVE-2024-20350](https://insights.sbomify.com/CVE-2024-20350/): Cisco Catalyst Center Static SSH Host Key Vulnerability (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20353 and fix it if it is affected.

What it is: CVE-2025-20353 is a medium-severity cross-site scripting vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 13 Nov 2025. 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-2025-20353 in the wild and no public exploit code.

Affected product: Cisco Digital Network Architecture Center (DNA Center). 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-2025-20353/ (Markdown: https://insights.sbomify.com/CVE-2025-20353/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20353
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20353
- OSV: https://osv.dev/vulnerability/CVE-2025-20353

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-20353/
Summaries are generated and may contain mistakes; the official description above is the record.