# CVE-2024-28868: Umbraco possible user enumeration vulnerability

> Attackers can enumerate valid usernames via the native login screen, potentially aiding further attacks against Umbraco CMS installations.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Mar 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-552f-97wf-pmpq

## What is CVE-2024-28868?

CVE-2024-28868 is a low-severity vulnerability in Umbraco Umbraco Cms, published on 20 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Umbraco is an ASP.NET content management system. Umbraco 10 prior to 10.8.4 with access to the native login screen is vulnerable to a possible user enumeration attack. This issue was fixed in version 10.8.5. As a workaround, one may disable the native login screen by exclusively using external logins.

Weakness: CWE-203 (Observable Discrepancy), CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2024-28868?

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


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `UmbracoCMS` | NuGet | From 10.0.0 | 10.8.5 |
| `UmbracoCMS` | NuGet | From 10.0.0 | 10.8.5 |

Products: Umbraco Umbraco Cms.

## How do I fix CVE-2024-28868?

Upgrade UmbracoCMS to 10.8.5 or later.

## Is CVE-2024-28868 being exploited?

There is no known exploitation of CVE-2024-28868 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-2024-28868 and fix it if it is affected.

What it is: CVE-2024-28868 is a low-severity vulnerability in Umbraco Umbraco Cms, published on 20 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-28868 in the wild and no public exploit code.

Affected packages and fixed versions:
- UmbracoCMS (NuGet): affected from 10.0.0; fixed in 10.8.5
- UmbracoCMS (NuGet): affected from 10.0.0; fixed in 10.8.5

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-2024-28868/ (Markdown: https://insights.sbomify.com/CVE-2024-28868/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-28868
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-28868
- OSV: https://osv.dev/vulnerability/CVE-2024-28868

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-28868/
Summaries are generated and may contain mistakes; the official description above is the record.