# CVE-2025-67288: Umbraco CMS has an arbitrary file upload vulnerability

> Attackers may execute arbitrary code via crafted PDF uploads in Umbraco CMS, though the vendor disputes this as an administrator configuration responsibility.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Dec 2025
- **Updated:** 8 Jul 2026
- **Also known as:** GHSA-54mj-vcvj-q3v5

## What is CVE-2025-67288?

CVE-2025-67288 is a critical vulnerability in Umbraco Umbraco Cms, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code by uploading a crafted PDF file. NOTE: this is disputed by the Supplier because the responsibility for file validation (as shown in the documentation) belongs to the system administrator who is implementing Umbraco CMS in their environment, not to Umbraco CMS itself. The Supplier also states that PDF JavaScript runs in a completely isolated sandbox, not the browser's DOM context, which means that privilege boundaries would not be crossed, a related issue to CVE-2023-49279.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2025-67288?

2 open source packages ship an affected version, including Umbraco.Cms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Umbraco.Cms` | NuGet | All versions to 16.3.3 | None |
| `Umbraco.Cms` | NuGet | All versions to 16.3.3 | None |

Products: Umbraco Umbraco Cms.

## How do I fix CVE-2025-67288?

No fix has been published for CVE-2025-67288 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-67288 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67288 exists.

## Other vulnerabilities in Umbraco Umbraco Cms

- [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)
- [CVE-2020-9471](https://insights.sbomify.com/CVE-2020-9471/): Umbraco CMS Authenticated File Upload (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-67288 and fix it if it is affected.

What it is: CVE-2025-67288 is a critical vulnerability in Umbraco Umbraco Cms, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67288 exists.

Affected packages and fixed versions:
- Umbraco.Cms (NuGet): affected all versions up to 16.3.3; no fix listed
- Umbraco.Cms (NuGet): affected all versions up to 16.3.3; no fix listed

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-2025-67288/ (Markdown: https://insights.sbomify.com/CVE-2025-67288/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-67288
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-67288
- OSV: https://osv.dev/vulnerability/CVE-2025-67288

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-67288/
Summaries are generated and may contain mistakes; the official description above is the record.