GitHub Advisory DatabaseGHSA-6XMX-85X3-4CV2Stored XSS via SVG File Upload
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.8 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
13.3%
Impact
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.
Workaround
Implement the server side file validation
https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
or
Serve all media from an different host (e.g cdn) that where umbraco is hosted
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| umbraco.cms | lt | 12.2.0 | |
| umbraco.cms | lt | 11.5.0 | |
| umbraco.cms | ge | 9.0.0 | |
| umbraco.cms | lt | 10.7.0 | |
| umbraco.cms | lt | 8.18.9 | |
| umbraco.cms | lt | 7.15.11 |
Related
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.8 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
13.3%