Vulnerability · Published Dec 12, 2023 · Assigned by GitHub_M
CVE-2023-49279Umbraco CMS vulnerable to stored XSS via SVG File Upload
Low 3.7
In plain English
A low-severity cross-site scripting in Umbraco-CMS from umbraco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | umbraco.cms | 7.15.11 | GHSA-6xmx-85x3-4cv2 |
| NuGet | umbraco.cms | 8.18.9 | GHSA-6xmx-85x3-4cv2 |
| NuGet | umbraco.cms | 10.7.0 | GHSA-6xmx-85x3-4cv2 |
| NuGet | umbraco.cms | 11.5.0 | GHSA-6xmx-85x3-4cv2 |
| NuGet | umbraco.cms | 12.2.0 | GHSA-6xmx-85x3-4cv2 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| umbraco | Umbraco-CMS | >= 7.0.0, < 7.15.11>= 8.0.0, < 8.18.9>= 9.0.0-rc001, < 10.7.0>= 11.0.0-rc1, < 11.5.0>= 12.0.0-rc1, < 12.2.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N