Vulnerabilities in pkg:nuget/DotNetNuke.Core
PACKAGECVE-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.
pkg:nuget/DotNetNuke.Core
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
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).
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.
Upgrade DotNetNuke.Core to 10.2.2
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
CVE-2026-40321 Affected DotNetNuke.Core Versions
1 component(s)| 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?
Which DotNetNuke.Core versions are affected?
What version fixes CVE-2026-40321?
Is DotNetNuke.Core affected?
What is the CVSS score of CVE-2026-40321?
What CWE is associated with CVE-2026-40321?
How can I check NuGet dependencies for CVE-2026-40321?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"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"
}
}