CVE•Published 2026-04-17•Modified 2026-04-24•1 article on news•6 live references•NVD data
CVE-2026-40321Dnnsoftware · Dotnetnuke
Vulnerability data via NVD (ingested)
CVSS v3.1
8.0
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.2.2, a user could upload a specially crafted SVG file that could include scripts that can target both authenticated and unauthenticated DNN users. The impact is increased if the scripts are run by a power user. Version 10.2.2 patches the issue.
Timeline
Published 2026-04-17
Modified 2026-04-24
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40321Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Dnnsoftware Dotnetnuke"All exposed Dnnsoftware Dotnetnuke instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Dotnetnuke"HTTP body or banner mentions "Dotnetnuke" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-40321Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40321Censys host search filtered to this CVE id.
grep.app
CVE-2026-40321Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40321GitHub code search for direct mentions.
Google dork
"CVE-2026-40321" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.