CVE-2025-52485: DNN.PLATFORM Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-wwc9-wmm3-2pmf
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2025-52485 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting DNN.PLATFORM libraries in the NuGet ecosystem. The issue involves dnn.platform allows stored cross-site scripting (xss) in activity feed. Remediation is available by upgrading affected packages to version 10.0.1.

CVE-2025-52485 at a Glance

CVE Identifier CVE-2025-52485
GHSA Identifier GHSA-wwc9-wmm3-2pmf
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product DNN.PLATFORM
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-52485

To remediate this vulnerability, upgrade all affected DNN.PLATFORM dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

DNN.PLATFORM fixed: 10.0.1 
Upgrade DNN.PLATFORM to 10.0.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for DNN.PLATFORM

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-52485, inspect your project dependencies for DNN.PLATFORM:

inspect dependencies for DNN.PLATFORM

Analyze the terminal output to locate any version of DNN.PLATFORM in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.0.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where 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. In DNN.PLATFORM, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

DNN.PLATFORM allows a specially crafted request can inject scripts in the Activity Feed Attachments endpoint which will then render in the feed, resulting in a cross-site scripting attack. This vulnerability is fixed in 10.0.1.

CVE-2025-52485 Affected DNN.PLATFORM Versions

1 component(s)
Fixed Versions:
10.0.1
Product / Package Ecosystem Affected Versions Fixed Version
DNN.PLATFORM
nuget/DNN.PLATFORM
NuGet
≥ 6.0.0
< 10.0.1
10.0.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-wwc9-wmm3-2pmf
NVD — CVE-2025-52485 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52485
DNN.PLATFORM Source Repository REPOSITORY
https://github.com/dnnsoftware/Dnn.Platform

Frequently Asked Questions

What is CVE-2025-52485?
CVE-2025-52485 is a security vulnerability in DNN.PLATFORM involving DNN.PLATFORM Allows Stored Cross-Site Scripting (XSS) in Activity Feed under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which DNN.PLATFORM versions are affected?
Affected versions include releases prior to 10.0.1 across affected packages: DNN.PLATFORM.
What version fixes CVE-2025-52485?
Upgrading to 10.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is DNN.PLATFORM affected?
Yes, DNN.PLATFORM is affected in releases prior to 10.0.1. Upgrade your dependency to 10.0.1 or later.
What is the CVSS score of CVE-2025-52485?
CVE-2025-52485 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2025-52485?
CVE-2025-52485 is classified under CWE-79: 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.).
How can I check NuGet dependencies for CVE-2025-52485?
Run the dependency tree command: 'inspect dependencies for DNN.PLATFORM'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wwc9-wmm3-2pmf",
  "modified" : "2025-09-15T20:07:25Z",
  "published" : "2025-06-20T14:56:59Z",
  "aliases" : [ "CVE-2025-52485" ],
  "summary" : "DNN.PLATFORM Allows Stored Cross-Site Scripting (XSS) in Activity Feed",
  "details" : "DNN.PLATFORM allows a specially crafted request can inject scripts in the Activity Feed Attachments endpoint which will then render in the feed, resulting in a cross-site scripting attack. This vulnerability is fixed in 10.0.1.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "DNN.PLATFORM"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "10.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-wwc9-wmm3-2pmf"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-52485"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-20T14:56:59Z",
    "nvd_published_at" : "2025-06-21T03:15:23Z"
  }
}