CVE-2023-49279

Low

Description

Umbraco is an ASP.NET content management system (CMS). Starting in version 7.0.0 and prior to versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0, a user with access to the backoffice can upload SVG files that include scripts. If the user can trick another user to load the media directly in a browser, the scripts can be executed. Versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0 contain a patch for this issue. Some workarounds are available. Implement the server side file validation or serve all media from an different host (e.g cdn) than where Umbraco is hosted.

SeverityLow
CVSS3.7
Exploit probability33. percentile0.4%
ProductUmbraco Cms
PublishedDec 12, 2023
First seenDec 12, 2023

How to fix

Update
  • umbraco umbraco_cms7.15.11, 8.18.9, 10.7.0, 11.5.0, 12.2.0 or later
  • Umbraco.CMS7.15.11, 8.18.9, 10.7.0, 11.5.0, 12.2.0 or later

Affected products

ProductAffected versionsFixed in
umbraco umbraco_cms7.0.0 ≤ v < 7.15.11, 8.0.0 ≤ v < 8.18.9, 10.0.0 ≤ v < 10.7.0, 11.0.0 ≤ v < 11.5.0, 12.0.0 ≤ v < 12.2.07.15.11, 8.18.9, 10.7.0, 11.5.0, 12.2.0
Umbraco.CMSNuGet7.0.0 ≤ v < 7.15.11, 8.0.0 ≤ v < 8.18.9, 9.0.0 ≤ v < 10.7.0, 11.0.0 ≤ v < 11.5.0, 12.0.0 ≤ v < 12.2.07.15.11, 8.18.9, 10.7.0, 11.5.0, 12.2.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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