Low severity3.7NVD Advisory· Published Dec 12, 2023· Updated Jun 17, 2026
CVE-2023-49279
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
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
3cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*range: >=7.0.0,<7.15.11
- (no CPE)range: >= 7.0.0, < 7.15.11
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-6xmx-85x3-4cv2ghsaADVISORY
- github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2023-49279ghsaADVISORY
- docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validationnvdProductWEB
News mentions
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