# CVE-2019-13493: Cross-site scripting in n/a

> An authenticated user can inject arbitrary JavaScript via file extension parameters in the Media Library, leading to persistent XSS.

- **Severity:** Medium 5.4 (`CVSS:3.0/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:** 17 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x9jp-5rg5-vc76

## What is CVE-2019-13493?

CVE-2019-13493 is a medium-severity cross-site scripting vulnerability in n/a, published on 17 Jul 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

In Sitecore 9.0 rev 171002, Persistent XSS exists in the Media Library and File Manager. An authenticated unprivileged user can modify the uploaded file extension parameter to inject arbitrary JavaScript.

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

## Which versions are affected by CVE-2019-13493?

It affects 1 product.


Products: Sitecore Experience Platform.

## How do I fix CVE-2019-13493?

No fix has been published for CVE-2019-13493 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-13493 being exploited?

There is no known exploitation of CVE-2019-13493 in the wild and no public exploit code.

Public exploit code:

- Sitecore 9.0 rev 171002 - Persistent Cross-Site Scripting (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2021-42237](https://insights.sbomify.com/CVE-2021-42237/): Sitecore XP Remote Command Execution (critical 9.8, exploited in the wild)
- [CVE-2023-27068](https://insights.sbomify.com/CVE-2023-27068/): Deserialization in n/a (critical 9.8)
- [CVE-2023-33652](https://insights.sbomify.com/CVE-2023-33652/): Code injection in n/a (high 8.8)
- [CVE-2023-33653](https://insights.sbomify.com/CVE-2023-33653/): Command injection in n/a (high 8.8)
- [CVE-2019-11080](https://insights.sbomify.com/CVE-2019-11080/): Deserialization in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13493 and fix it if it is affected.

What it is: CVE-2019-13493 is a medium-severity cross-site scripting vulnerability in n/a, published on 17 Jul 2019. 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-2019-13493 in the wild and no public exploit code.

Affected product: n/a. 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-2019-13493/ (Markdown: https://insights.sbomify.com/CVE-2019-13493/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13493
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13493
- OSV: https://osv.dev/vulnerability/CVE-2019-13493

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13493/
Summaries are generated and may contain mistakes; the official description above is the record.