Dotnetnuke < 13.3.3 Stored XSS potentially leading to host privilege escalation (GHSA-38xj-rgg3-5cjj)

high Nessus Plugin ID 339489

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Synopsis

An ASP.NET application running on the remote web server is affected by a vulnerability.

Description

According to its self-reported version, the instance of Dotnetnuke running on the remote web server is prior to 13.3.3.
It is, therefore, affected by a vulnerability.

- A stored cross-site scripting (XSS) vulnerability in the Console module could allow a Portal Administrator to execute arbitrary script in the browser of a Host/SuperUser. Successful exploitation could result in privilege escalation of an administrator of a single portal to installation-wide administrative access. A vulnerability was identified in the Console module's handling of administrator-managed content. Under certain conditions, user-supplied content was not properly sanitized or encoded before being rendered in an administrative interface. This vulnerability is of particular concern for multi-portal installations.
An attacker with Portal Administrator privileges could store malicious content that executes when a Host/SuperUser accesses the affected administrative interface. Because Host/SuperUser accounts have installation-wide authority, successful exploitation could lead to privilege escalation beyond a single portal, potentially allowing unauthorized administrative actions across the entire DNN installation.
(GHSA-38xj-rgg3-5cjj)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Dotnetnuke version 13.3.3 or later.

Plugin Details

Severity: High

ID: 339489

File Name: dotnetnuke_GHSA-38xj-rgg3-5cjj.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 8/25/2026

Updated: 8/25/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus

Enable CGI Scanning: true

Vulnerability Information

CPE: cpe:/a:dnnsoftware:dotnetnuke, cpe:/a:dotnetnuke:dotnetnuke

Required KB Items: installed_sw/DNN

Excluded KB Items: Settings/disable_cgi_scanning

Exploit Ease: No known exploits are available

Patch Publication Date: 8/25/2026

Vulnerability Publication Date: 8/25/2026

Reference Information

CWE: 79

Detections

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