{"id":"CVE-2026-40306","aliases":["GHSA-2rhw-gw3f-477j"],"url":"https://o3.security/vulnerability/CVE-2026-40306","summary":"DNN has same HostGUID for all new installs","details":"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.","published":"2026-04-17T21:09:30.317Z","modified":"2026-08-12T03:51:40.676372140Z","cvss":null,"epss":{"score":0.00175,"percentile":0.07283,"asOf":"2026-09-17"},"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-2026-40306.json"},{"type":"ADVISORY","url":"https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2rhw-gw3f-477j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40306"},{"type":"PACKAGE","url":"https://github.com/dnnsoftware/Dnn.Platform"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:40.676372140Z"}}