{"id":"CVE-2026-40321","aliases":["GHSA-ffq7-898w-9jc4"],"url":"https://o3.security/vulnerability/CVE-2026-40321","summary":"DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload","details":"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.","published":"2026-04-17T21:10:33.192Z","modified":"2026-08-05T03:47:15.902827559Z","cvss":{"score":8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"DotNetNuke.Core","fixedVersion":"10.2.2"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40321.json"},{"type":"ADVISORY","url":"https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40321"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-05T03:47:15.902827559Z"}}