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Dotnetnuke CVE-2026-24837

HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-01-28 security-advisories@github.com GHSA-vm5q-8qww-h238
.NET Dotnetnuke Dnnsoftware
7.6
CVSS 3.1 · GitHub Advisory
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as high-privilege user
  2. Delivery
    Create module with malicious script in friendly name
  3. Exploit
    User interacts with module in Persona Bar
  4. Execution
    XSS payload executes in admin context
  5. Impact
    Session hijacking or admin account compromise

Vulnerability Assessment

Weakness
CWE
CWE-79
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Exploitation Conditions

DNN versions 9.0.0 through 9.13.9 or 10.0.0 through 10.1.x. Requires high-privilege account (module admin or above). Module friendly name field must accept unescaped script tags. Admin user must access affected module via Persona Bar interface.
Impact

CVSS 7.6 (HIGH). Attack vector: Network. Complexity: High. Privileges required: High. User interaction: Required.
Exploit ScenarioDerived

An attacker could exploit this vulnerability to compromise the affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Stored cross-site scripting in DNN versions 9.0.0 through 9.13.9 and 10.0.0 through 10.1.x allows high-privileged users with UI interaction to inject malicious scripts into module friendly names that execute within the Persona Bar administrative interface. An authenticated attacker with sufficient permissions could exploit this to perform administrative actions or compromise other users' sessions. No patch is currently available for affected versions.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:54 CVSS 7.6

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, a module friendly name could include scripts that will run during some module operations in the Persona Bar. [CVSS 7.6 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Affected Packages

nuget dotnetnuke.core fix: 10.2.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in nuget

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Technical ContextAI · show details

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Dotnetnuke. DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, a module friendly name could include scripts that will run during some module operations in the Persona Bar. Versions 9.13.10 and 10.2.0 contain a fix for the issue.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

GitHub Advisory PRIMARY 7.6 HIGH
AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
CVE Published
Jan 28, 2026 - 00:15 nvd
HIGH 7.6

DescriptionGitHub Advisory

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, a module friendly name could include scripts that will run during some module operations in the Persona Bar. Versions 9.13.10 and 10.2.0 contain a fix for the issue.

Executive ViewAI

Why It Matters

DNN CMS installations (versions 9.0.0-9.13.9 and 10.0.0-10.1.x) are vulnerable to stored cross-site scripting attacks through module friendly names, allowing authenticated attackers to execute malicious scripts within the admin interface. Organizations using affected DNN versions face potential data theft, admin account compromise, and unauthorized system modifications.

Business Impact: High
Compensating Controls

Restrict module management permissions to highly-trusted administrators only; implement Web Application Firewall (WAF) rules to filter script tags in module friendly name parameters; disable the Persona Bar module management feature if not operationally required; enforce strict Content Security Policy (CSP) headers; conduct regular security audits of module configurations; segregate DNN instances on dedicated network segments with limited admin access.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*
cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*

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Same weakness CWE-79 – Cross-site Scripting (XSS)

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References

Advisories & patches
ADVISORY https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-vm5q-8qww-h238

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