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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-87"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40321.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "10.2.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"original_tag": "v10.2.2",
"range": [
{
"fixed": "3620738b4994107135057a1a234ff15132b19732"
}
],
"source": "REFERENCES_TAG"
},
{
"cpe": "cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "10.2.2"
}
],
"source": "CPE_RANGE"
}
]
}