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DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile

Moderate severity GitHub Reviewed Published Sep 23, 2025 in dnnsoftware/Dnn.Platform • Updated Sep 23, 2025

Package

nuget DotNetNuke.Core (NuGet)

Affected versions

< 10.1.0

Patched versions

10.1.0

Description

Summary

A reflected cross-site scripting (XSS) vulnerability exists under certain conditions, using a specially crafter url to view a user profile

Description

DNN’s URL/path handling and template rendering can allow specially crafted input to be reflected into a user profile that are returned to the browser. In these cases, the application does not sufficiently neutralize or encode characters that are meaningful in HTML, so an attacker can cause a victim’s browser to interpret attacker-controlled content as part of the page’s HTML.

References

@valadas valadas published to dnnsoftware/Dnn.Platform Sep 23, 2025
Published to the GitHub Advisory Database Sep 23, 2025
Reviewed Sep 23, 2025
Published by the National Vulnerability Database Sep 23, 2025
Last updated Sep 23, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(8th percentile)

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

CVE ID

CVE-2025-59821

GHSA ID

GHSA-jc4g-c8ww-5738

Source code

Credits

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