CVE-2023-49279 Umbraco CMS vulnerable to stored XSS via SVG File Upload

2023-12-1219:35:05

CWE-79

GitHub_M

www.cve.org

umbraco cms

stored xss

svg file upload

asp.net

content management system

vulnerability

security patch

server side validation

media hosting

3.7 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

0.0004 Low

EPSS

Percentile

13.3%

JSON

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.

CNA Affected

[
  {
    "vendor": "umbraco",
    "product": "Umbraco-CMS",
    "versions": [
      {
        "version": ">= 7.0.0, < 7.15.11",
        "status": "affected"
      },
      {
        "version": ">= 8.0.0, < 8.18.9",
        "status": "affected"
      },
      {
        "version": ">= 9.0.0-rc001, < 10.7.0",
        "status": "affected"
      },
      {
        "version": ">= 11.0.0-rc1, < 11.5.0",
        "status": "affected"
      },
      {
        "version": ">= 12.0.0-rc1, < 12.2.0",
        "status": "affected"
      }
    ]
  }
]