CVE-2024-48927 Potential Code Execution Risk When Viewing SVG Files in Full Screen in Backoffice
Attackers can execute arbitrary code in the Umbraco Backoffice by tricking users into viewing malicious SVG files in full screen mode.
- 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
What is CVE-2024-48927?
CVE-2024-48927 is a medium-severity cross-site scripting vulnerability in Umbraco Umbraco Cms, published on 22 Oct 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Umbraco, a free and open source .NET content management system, has a remote code execution issue in versions on the 13.x branch prior to 13.5.2, 10.x prior to 10.8.7, and 8.x prior to 8.18.15. There is a potential risk of code execution for Backoffice users when they “preview” SVG files in full screen mode. Versions 13.5.2, 10.8,7, and 8.18.15 contain a patch for the issue. As a workaround, derver-side file validation is available to strip script tags from file's content during the file upload process.
Which versions are affected by CVE-2024-48927?
6 open source packages ship an affected version, including Umbraco.Cms and UmbracoCms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Umbraco.Cms NuGet | From 10.0.0 | 10.8.7 |
Umbraco.Cms NuGet | From 10.0.0 | 10.8.7 |
Umbraco.Cms NuGet | From 13.0.0 | 13.5.2 |
Umbraco.Cms NuGet | From 13.0.0 | 13.5.2 |
UmbracoCms NuGet | From 8.0.0 | 8.18.15 |
UmbracoCms NuGet | From 8.0.0 | 8.18.15 |
Products include Umbraco Umbraco Cms.
How do I fix CVE-2024-48927?
Upgrade Umbraco.Cms to a fixed version for your release line: 10.8.7 or 13.5.2.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-48927 being exploited?
There is no known exploitation of CVE-2024-48927 in the wild and no public exploit code.
Other vulnerabilities in Umbraco Umbraco Cms
- CVE-2025-67288 Umbraco CMS has an arbitrary file upload vulnerability
- CVE-2014-10074 File upload in n/a
- CVE-2012-1301 Server-side request forgery in n/a
- CVE-2012-10054 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE
- CVE-2025-32017 Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Sources
Also known as GHSA-5955-cwv4-h7qh.