Dotnetnuke
CVE-2026-24836
HIGH
GHSA-2g5g-hcgh-q3rp
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticated user writes script in extension log notes
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ExploitScript executes in PersonaBar UI context
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ExecutionStored XSS payload runs with admin privileges
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ImpactSession hijacking or privilege escalation achieved
Vulnerability Assessment
| Weakness |
CWE
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. |
| Exploitation Conditions | DNN versions 9.0.0 through 9.13.9 or 10.0.0 through 10.1.x with high-privilege user account (PR:H) able to write to extension log notes, PersonaBar feature enabled, victim admin must view affected log entry (UI:R) |
| 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. |
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Alert meAnalysisAIv1 – 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 authenticated administrators with high privileges to inject malicious scripts into log notes that execute within the PersonaBar interface. An attacker with admin credentials could perform actions as the victim or steal session data when the logs are viewed. Upgrade to DNN 9.13.10 or 10.2.0 to remediate this vulnerability.
Earlier versions of this analysis (1)
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, extensions could write richtext in log notes which can include scripts that would run in the PersonaBar when displayed. [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
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.
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, extensions could write richtext in log notes which can include scripts that would run in the PersonaBar when displayed. 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
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
Lifecycle Timeline
2DescriptionGitHub 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, extensions could write richtext in log notes which can include scripts that would run in the PersonaBar when displayed. Versions 9.13.10 and 10.2.0 contain a fix for the issue.
Executive ViewAI
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 log notes that execute malicious scripts when administrators view the PersonaBar interface. This vulnerability affects administrative users and could lead to unauthorized actions, credential theft, or lateral movement within the CMS environment.
Restrict PersonaBar administrative interface access to specific IP addresses using network segmentation or reverse proxy rules; implement Web Application Firewall (WAF) rules to block script tags and event handlers in log note inputs; disable extension logging if not operationally critical; enforce principle of least privilege for administrative accounts; implement strict Content Security Policy (CSP) headers to prevent inline script execution; regularly audit and sanitize existing log entries for malicious content; monitor PersonaBar access logs for suspicious activity.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)GitHub Advisory
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