Umbraco CMS vulnerable to stored XSS via SVG File Upload
CVE-2023-49279

3.7LOW

Key Information:

Vendor

Umbraco

Status
Umbraco-cms
Vendor
CVE Published:
12 December 2023

What is CVE-2023-49279?

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.

Affected Version(s)

Umbraco-CMS >= 7.0.0, < 7.15.11 < 7.0.0, 7.15.11

Umbraco-CMS >= 8.0.0, < 8.18.9 < 8.0.0, 8.18.9

Umbraco-CMS >= 9.0.0-rc001, < 10.7.0 < 9.0.0-rc001, 10.7.0

References

https://github.com/umbraco/Umbraco-CMS/security/advisorie...
x_refsource_CONFIRM
https://docs.umbraco.com/umbraco-cms/reference/security/s...
x_refsource_MISC

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-49279 : Umbraco CMS vulnerable to stored XSS via SVG File Upload