Medium severity · published Dec 12, 2023
CVE-2023-49279
Umbraco is an ASP.NET content management system (CMS)
5.4
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UC
Umbraco Cms · Umbraco
7.0.0 before 7.15.11; 8.0.0 before 8.18.9; 10.0.0 before 10.7.0; 11.0.0 before 11.5.0; 12.0.0 before 12.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-49279
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-49279
Product
https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
Vendor Advisory
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2
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