CVE•Published 2026-04-17•Modified 2026-04-24•0 articles on news•4 live references•NVD data
CVE-2026-40306Dnnsoftware · Dotnetnuke
Vulnerability data via NVD (ingested)
CVSS v3.1
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. All new installations of DNN 10.x.x - 10.2.1 have the same Host GUID. This does not affect upgrades from 9.x.x. 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-2026-40306Hosts 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-2026-40306Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40306Censys host search filtered to this CVE id.
grep.app
CVE-2026-40306Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40306GitHub code search for direct mentions.
Google dork
"CVE-2026-40306" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-40306 on GitHub.
We haven't classified any articles referencing CVE-2026-40306 yet. The external references above still apply.