Low severityNVD Advisory· Published Dec 12, 2023· Updated Aug 28, 2024
Umbraco CMS vulnerable to stored XSS via SVG File Upload
CVE-2023-49279
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Umbraco.CMSNuGet | >= 7.0.0, < 7.15.11 | 7.15.11 |
Umbraco.CMSNuGet | >= 8.0.0, < 8.18.9 | 8.18.9 |
Umbraco.CMSNuGet | >= 9.0.0, < 10.7.0 | 10.7.0 |
Umbraco.CMSNuGet | >= 11.0.0, < 11.5.0 | 11.5.0 |
Umbraco.CMSNuGet | >= 12.0.0, < 12.2.0 | 12.2.0 |
Affected products
2- Range: >= 7.0.0, < 7.15.11
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-6xmx-85x3-4cv2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-49279ghsaADVISORY
- docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validationghsax_refsource_MISCWEB
- github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2ghsax_refsource_CONFIRMWEB
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