DNN affected by Stored Cross-Site Scripting (XSS) in Profile Biography field
Date: 2025-09
Affected: nuget/DotNetNuke.Core
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2025-59539
CWE: CWE-79
CVSS: 6.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)

## Summary Users can use special syntax to inject javascript code in their profile biography field. Although there was sanitization in place, it did not cover all possible scenarios ## Description When embedding information in the `Biography` field, even if that field is not rich-text, users could inject javascript code that would run in the context of the website and to any other user that can view the profile including administrators and/or superusers.


Mitigations:

Architectural layers (MAESTRO):