Dotnetnuke < 9.13.10 / 10.0.x < 10.02.00 Stored XSS in Module Description (CVE-2026-24833)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(297829);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/06");

  script_cve_id("CVE-2026-24833");

  script_name(english:"Dotnetnuke < 9.13.10 / 10.0.x < 10.02.00 Stored XSS in Module Description (CVE-2026-24833)");

  script_set_attribute(attribute:"synopsis", value:
"An ASP.NET application running on the remote web server is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the instance of Dotnetnuke running on the remote web server is prior to 9.13.10
or 10.0.x prior to 10.02.00. It is, therefore, affected by a vulnerability.

  - DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft
    ecosystem. Prior to versions 9.13.10 and 10.2.0, a module could install with richtext in its description
    field which could contain scripts that will run for user in the Persona Bar. Versions 9.13.10 and 10.2.0
    contain a fix for the issue. (CVE-2026-24833)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-9r3h-mpf8-25gj
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9bf7f3b0");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Dotnetnuke version 10.02.00 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-24833");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/04");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:dotnetnuke:dotnetnuke");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:dnnsoftware:dotnetnuke");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("dotnetnuke_detect.nasl");
  script_require_keys("installed_sw/DNN");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}

include('vcf.inc');
include('http.inc');

var app = 'DNN';

get_install_count(app_name:app, exit_if_zero:TRUE);

var port = get_http_port(default:80, asp:TRUE);

var app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);
vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  { 'fixed_version' : '9.13.10' },
  { 'min_version' : '10.0.0', 'fixed_version' : '10.02.00' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_WARNING
);