# CVE-2023-48313: Umbraco contains a DOM-XSS

> Attackers can inject malicious scripts into Umbraco CMS websites, potentially compromising user sessions or executing code in victim browsers.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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:** Yes
- **Published:** 12 Dec 2023
- **Updated:** 28 Aug 2024
- **Also known as:** GHSA-v98m-398x-269r

## What is CVE-2023-48313?

CVE-2023-48313 is a medium-severity cross-site scripting vulnerability in Umbraco Umbraco Cms, published on 12 Dec 2023. 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

Umbraco is an ASP.NET content management system (CMS).  Starting in 10.0.0 and prior to versions 10.8.1 and 12.3.4, Umbraco contains a cross-site scripting (XSS) vulnerability enabling attackers to bring malicious content into a website or application. Versions 10.8.1 and 12.3.4 contain a patch for this issue.

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

## Which versions are affected by CVE-2023-48313?

4 open source packages ship an affected version, including Umbraco.CMS. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Umbraco.CMS` | NuGet | From 10.0.0 | 10.8.1 |
| `Umbraco.CMS` | NuGet | From 10.0.0 | 10.8.1 |
| `Umbraco.CMS` | NuGet | From 11.0.0 | 12.3.4 |
| `Umbraco.CMS` | NuGet | From 11.0.0 | 12.3.4 |

Products: Umbraco Umbraco Cms.

## How do I fix CVE-2023-48313?

Upgrade Umbraco.CMS to a fixed version for your release line: 10.8.1 or 12.3.4.

## Is CVE-2023-48313 being exploited?

There is no known exploitation of CVE-2023-48313 in the wild and no public exploit code.

## Other vulnerabilities in Umbraco Umbraco Cms

- [CVE-2025-67288](https://insights.sbomify.com/CVE-2025-67288/): Umbraco CMS has an arbitrary file upload vulnerability (critical 10.0)
- [CVE-2014-10074](https://insights.sbomify.com/CVE-2014-10074/): File upload in n/a (critical 9.8)
- [CVE-2012-1301](https://insights.sbomify.com/CVE-2012-1301/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2012-10054](https://insights.sbomify.com/CVE-2012-10054/): Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE (critical 9.3)
- [CVE-2025-32017](https://insights.sbomify.com/CVE-2025-32017/): Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-48313 and fix it if it is affected.

What it is: CVE-2023-48313 is a medium-severity cross-site scripting vulnerability in Umbraco Umbraco Cms, published on 12 Dec 2023. 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-2023-48313 in the wild and no public exploit code.

Affected packages and fixed versions:
- Umbraco.CMS (NuGet): affected from 10.0.0; fixed in 10.8.1
- Umbraco.CMS (NuGet): affected from 10.0.0; fixed in 10.8.1
- Umbraco.CMS (NuGet): affected from 11.0.0; fixed in 12.3.4
- Umbraco.CMS (NuGet): affected from 11.0.0; fixed in 12.3.4

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-2023-48313/ (Markdown: https://insights.sbomify.com/CVE-2023-48313/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48313
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48313
- OSV: https://osv.dev/vulnerability/CVE-2023-48313

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48313/
Summaries are generated and may contain mistakes; the official description above is the record.