Vulnerabilities in pkg:nuget/DotNetNuke.Core

PACKAGE
Advisory Identifier: GHSA-ffq7-898w-9jc4
Advisory Summary

CVE-2026-40321 is a HIGH (CVSS 8.0) cross-site scripting vulnerability (CWE-87: Improper Neutralization of Alternate XSS Syntax) affecting DotNetNuke.Core libraries in the NuGet ecosystem. The issue involves dotnetnuke.core has stored cross-site-scripting (xss) via svg upload. Remediation is available by upgrading affected packages to version 10.2.2.

36 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:nuget/DotNetNuke.Core

36 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:nuget/DotNetNuke.Core. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-ffq7-898w-9jc4 CVE-2026-40321 HIGH DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
GHSA-2rhw-gw3f-477j CVE-2026-40306 MODERATE DNN: Same HostGUID for all new installs
GHSA-fpj4-9qhx-5m6m CVE-2026-40305 MODERATE DNN: Force Friend Request Acceptance
GHSA-fcpv-w245-r2q7 - LOW DotNetNuke.Core security code analysis rules triggered
GHSA-jjwg-4948-6wxp CVE-2026-24784 MODERATE DotNetNuke.Core has a potential XSS vulnerability in modules' header and footer
GHSA-w9pf-h6m6-v89h CVE-2026-24838 CRITICAL DotNetNuke.Core Vulnerable to Stored XSS via Module Title
GHSA-vm5q-8qww-h238 CVE-2026-24837 HIGH DotNetNuke.Core Vulnerable to Stored XSS in Module Deletion Confirmation Modal
GHSA-2g5g-hcgh-q3rp CVE-2026-24836 HIGH DotNetNuke.Core Vulnerable to Stored XSS in Scheduler LogNotes
GHSA-hmvq-8p83-cq52 CVE-2025-64094 MODERATE DNN vulnerable to stored cross-site-scripting (XSS) via SVG upload
GHSA-j3g9-6fx5-gjv7 CVE-2018-18325 HIGH Inadequate Encryption Strength in DotNetNuke
GHSA-h595-8pw6-5q6v CVE-2018-15811 HIGH Inadequate Encryption Strength in DotNetNuke
GHSA-jc4g-c8ww-5738 CVE-2025-59821 MODERATE DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile
GHSA-gj8m-5492-q98h CVE-2025-59546 LOW DNN Vulnerable to Stored XSS Using Backend Admin Credentials
GHSA-2qxc-mf4x-wr29 CVE-2025-59545 CRITICAL DNN Vulnerable to Stored Cross-Site Scripting (XSS) in the Prompt module
GHSA-7rcc-q6rq-jpcm CVE-2025-59539 MODERATE DNN affected by Stored Cross-Site Scripting (XSS) in Profile Biography field
GHSA-wq2j-w9pm-7x2p CVE-2025-59535 MODERATE DNN allows loading unused themes on anonymous clients through query parameters
GHSA-79m3-rvx2-3qq9 CVE-2025-48377 MODERATE Reflected Cross-Site Scripting (XSS) in module actions in edit mode
GHSA-m4hf-fxcg-cp34 CVE-2025-48378 MODERATE DNN allows Stored Cross-Site Scripting (XSS) with svg files rendered inline
GHSA-3f7v-qx94-666m CVE-2025-32372 MODERATE DotNetNuke.Core Vulnerable to Server-Side Request Forgery (SSRF)
GHSA-m6w9-8cxc-jff7 CVE-2018-14486 MODERATE DNN XSS Vulnerability
GHSA-grw3-hjjm-5cjm CVE-2008-6540 MODERATE DotNetNuke Default Machine Key Exposure
GHSA-xr96-7ccp-pg5c CVE-2007-0660 MODERATE DotNetNuke Vulnerable to XSS in Pass-Through Values
GHSA-mj48-f959-pqph CVE-2013-7335 MODERATE DotNetNuke (DNN) Open redirect vulnerability
GHSA-rvrj-j7cc-236p CVE-2013-4649 MODERATE DotNetNuke (DNN) Cross-site scripting (XSS) vulnerability via the __dnnVariable parameter
GHSA-vjcm-j85r-7p68 CVE-2020-5188 MODERATE DNN File Upload Vulnerability
GHSA-9phr-h5mx-4fp6 CVE-2020-5186 MODERATE DNN XSS Vulnerability
GHSA-4qf5-7xc2-wqpg CVE-2020-5187 HIGH DNN Path Traversal via Zip Slip
GHSA-9w72-2f23-57gm CVE-2022-2922 MODERATE DNN vulnerable to Relative Path Traversal
GHSA-x2rg-fmcv-crq5 CVE-2017-9822 HIGH DNN (aka DotNetNuke) has Remote Code Execution via a cookie
GHSA-5c66-x4wm-rjfx CVE-2016-7119 MODERATE Cross-site scripting (XSS) vulnerability in the user-profile biography section in DotNetNuke (DNN)
GHSA-x8f7-h444-97w4 CVE-2015-2794 CRITICAL The installation wizard in DotNetNuke (DNN) allows privilege escalation
GHSA-g8j6-m4p7-5rfq CVE-2017-0929 HIGH High severity vulnerability that affects DotNetNuke.Core
GHSA-5whq-j5qg-wjvp CVE-2019-12562 MODERATE Stored Cross-Site Scripting vulnerability in admin component of DotNetNuke
GHSA-pf46-gqg9-j3v3 CVE-2018-15812 HIGH Insufficient Entropy in DotNetNuke
GHSA-xx3h-j3cx-8qfj CVE-2018-18326 HIGH Insufficient Entropy in DotNetNuke
GHSA-v76m-f5cx-8rg4 CVE-2015-1566 MODERATE Moderate severity vulnerability that affects DotNetNuke.Core

CVE-2026-40321 at a Glance

CVE Identifier CVE-2026-40321
GHSA Identifier GHSA-ffq7-898w-9jc4
Severity HIGH
CVSS v3.1 Base Score 8.0
CWE Classification CWE-87: Improper Neutralization of Alternate XSS Syntax
Affected Product DotNetNuke.Core
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 8.0

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-40321

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

DotNetNuke.Core fixed: 10.2.2
Upgrade DotNetNuke.Core to 10.2.2
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 DotNetNuke.Core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-40321, inspect your project dependencies for DotNetNuke.Core:

inspect dependencies for DotNetNuke.Core

Analyze the terminal output to locate any version of DotNetNuke.Core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.2.2), 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-87: Improper Neutralization of Alternate XSS Syntax, where the product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax. In DotNetNuke.Core, 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 (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.2.2, a user could upload a specially crafted SVG file that could include scripts that can target both authenticated and unauthenticated DNN users. The impact is increased if the scripts are run by a power user. Version 10.2.2 patches the issue.

CVE-2026-40321 Affected DotNetNuke.Core Versions

1 component(s)
Fixed Versions:
10.2.2
Product / Package Ecosystem Affected Versions Fixed Version
DotNetNuke.Core
NuGet
< 10.2.2
10.2.2

References

Frequently Asked Questions

What is CVE-2026-40321?
CVE-2026-40321 is a security vulnerability in DotNetNuke.Core involving DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload under CWE-87: Improper Neutralization of Alternate XSS Syntax.
Which DotNetNuke.Core versions are affected?
Affected versions include releases prior to 10.2.2 across affected packages: DotNetNuke.Core.
What version fixes CVE-2026-40321?
Upgrading to 10.2.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is DotNetNuke.Core affected?
Yes, DotNetNuke.Core is affected in releases prior to 10.2.2. Upgrade your dependency to 10.2.2 or later.
What is the CVSS score of CVE-2026-40321?
CVE-2026-40321 has a CVSS v3.1 base score of 8.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-40321?
CVE-2026-40321 is classified under CWE-87: Improper Neutralization of Alternate XSS Syntax (The product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax.).
How can I check NuGet dependencies for CVE-2026-40321?
Run the dependency tree command: 'inspect dependencies for DotNetNuke.Core'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-ffq7-898w-9jc4",
  "modified" : "2026-04-24T20:50:37Z",
  "published" : "2026-04-10T20:42:48Z",
  "aliases" : [ "CVE-2026-40321" ],
  "summary" : "DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload",
  "details" : "DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.2.2, a user could upload a specially crafted SVG file that could include scripts that can target both authenticated and unauthenticated DNN users. The impact is increased if the scripts are run by a power user. Version 10.2.2 patches the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "DotNetNuke.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.2.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-40321"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-87" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-10T20:42:48Z",
    "nvd_published_at" : "2026-04-17T22:16:32Z"
  }
}