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Vulnerability details: VCID-azpt-qmk7-1ueu
Vulnerability ID VCID-azpt-qmk7-1ueu
Aliases CVE-2023-49279
GHSA-6xmx-85x3-4cv2
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
There are no known severity scores.
Reference id Reference type URL
https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
CVE-2023-49279 https://nvd.nist.gov/vuln/detail/CVE-2023-49279
GHSA-6xmx-85x3-4cv2 https://github.com/advisories/GHSA-6xmx-85x3-4cv2
GHSA-6xmx-85x3-4cv2 https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2
No exploits are available.
There are no known vectors.

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:46:34.216129+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/UmbracoCms/CVE-2023-49279.yml 38.6.0