Detections
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Dotnetnuke < 10.2.2 Stored cross-site-scripting (XSS) via SVG upload (CVE-2026-40321)

high Nessus Plugin ID 306168

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 10.2.2.
It is, therefore, affected by a vulnerability.

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 10.2.2 or later.

See Also

http://www.nessus.org/u?8736dc7f

Plugin Details

Severity: High

ID: 306168

File Name: dotnetnuke_CVE-2026-40321.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 4/13/2026

Updated: 4/13/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus

Enable CGI Scanning: true

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-40321

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

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

Required KB Items: installed_sw/DNN

Excluded KB Items: Settings/disable_cgi_scanning

Exploit Ease: No known exploits are available

Patch Publication Date: 4/10/2026

Vulnerability Publication Date: 4/10/2026

Reference Information

CVE: CVE-2026-40321

CWE: 87