CVE-2023-49279

Umbraco CMS vulnerable to stored XSS via SVG File Upload

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.

Category

3.7
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.45%
Vendor Advisory github.com
Affected: umbraco Umbraco-CMS
Published at:
Updated at:

References

Link Tags
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2 vendor advisory
https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation product

Frequently Asked Questions

What is the severity of CVE-2023-49279?
CVE-2023-49279 has been scored as a low severity vulnerability.
How to fix CVE-2023-49279?
To fix CVE-2023-49279, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-49279 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-49279 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-49279?
CVE-2023-49279 affects umbraco Umbraco-CMS.
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