# CVE-2017-15280: Umbraco CMS XXE Vulnerability

> Attackers can exploit an XML external entity vulnerability in Umbraco CMS to read server files or access internal network resources.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 12 Oct 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-h2vq-7gf2-qw9v

## What is CVE-2017-15280?

CVE-2017-15280 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 12 Oct 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

XML external entity (XXE) vulnerability in Umbraco CMS before 7.7.3 allows attackers to obtain sensitive information by reading files on the server or sending TCP requests to intranet hosts (aka SSRF), related to Umbraco.Web/umbraco.presentation/umbraco/dialogs/importDocumenttype.aspx.cs.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2017-15280?

2 open source packages ship an affected version, including UmbracoCms.Web. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `UmbracoCms.Web` | NuGet | All versions | 7.7.3 |
| `UmbracoCms.Web` | NuGet | All versions | 7.7.3 |

Products: Umbraco Umbraco Cms.

## How do I fix CVE-2017-15280?

Upgrade UmbracoCms.Web to 7.7.3 or later.

## Is CVE-2017-15280 being exploited?

There is no known exploitation of CVE-2017-15280 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-2017-15280 and fix it if it is affected.

What it is: CVE-2017-15280 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 12 Oct 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-15280 in the wild and no public exploit code.

Affected packages and fixed versions:
- UmbracoCms.Web (NuGet): affected all versions; fixed in 7.7.3
- UmbracoCms.Web (NuGet): affected all versions; fixed in 7.7.3

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-2017-15280/ (Markdown: https://insights.sbomify.com/CVE-2017-15280/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-15280
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-15280
- OSV: https://osv.dev/vulnerability/CVE-2017-15280

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-15280/
Summaries are generated and may contain mistakes; the official description above is the record.