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CVE-2023-49279
Good to know:
Date: December 12, 2023
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.
Language: C#
Severity Score
Severity Score
Weakness Type (CWE)
Cross-Site Scripting (XSS)
CWE-79Top Fix
Upgrade Version
Upgrade to version UmbracoCMS.Core - 7.15.11,8.18.9, UmbracoCMS.Web - 7.15.11,8.18.9, Umbraco.CMS.Core - 10.7.0,11.5.0,12.2.0, Umbraco.Cms.Web.BackOffice - 10.7.0,11.5.0,12.2.0, Umbraco.Cms.Infrastructure - 10.7.0,11.5.0,12.2.0
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | REQUIRED |
| Scope (S): | CHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | LOW |
| Availability (A): | NONE |