{"answers":{"affected":"2 open source packages ship an affected version, including DotNetNuke.Core. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-40306 in the wild and no public exploit code.","fix":"Upgrade DotNetNuke.Core to 10.2.2 or later.","what":"CVE-2026-40306 is a medium-severity vulnerability in Dnnsoftware Dotnetnuke, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-40306 and fix it if it is affected.\n\nWhat it is: CVE-2026-40306 is a medium-severity vulnerability in Dnnsoftware Dotnetnuke, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-40306 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- DotNetNuke.Core (NuGet): affected from 10.0.0; fixed in 10.2.2\n- DotNetNuke.Core (NuGet): affected from 10.0.0; fixed in 10.2.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-40306/ (Markdown: https://insights.sbomify.com/CVE-2026-40306/index.md)","id":"CVE-2026-40306","markdown":"https://insights.sbomify.com/CVE-2026-40306/index.md","name":"CVE-2026-40306","record":{"aliases":["GHSA-2rhw-gw3f-477j"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"DNN CMS","requires_auth":"none","summary":"Attackers can exploit identical Host GUIDs in new DNN installations to bypass security controls or impersonate hosts.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"dotnetnuke","vendor":"dnnsoftware"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"}],"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.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"DNN has same HostGUID for all new installs","id":"CVE-2026-40306","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"dnnsoftware:dotnetnuke","products":["dnnsoftware:dotnetnuke"],"type":"weak_cryptography","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"My Calendar: Unauthenticated Information Disclosure (IDOR) via Multisite switch_to_blog","id":"CVE-2026-40308"},"packages":[{"ecosystem":"NuGet","fixed":["10.2.2"],"introduced":["10.0.0"],"last_affected":[],"package":"DotNetNuke.Core","purl":null,"source":"GHSA-2rhw-gw3f-477j"},{"ecosystem":"NuGet","fixed":["10.2.2"],"introduced":["10.0.0"],"last_affected":[],"package":"DotNetNuke.Core","purl":"pkg:nuget/DotNetNuke.Core","source":"GHSA-2rhw-gw3f-477j"}],"prev":{"headline":"DNN has Force Friend Request Acceptance","id":"CVE-2026-40305"},"products":["Dnn.Platform"],"published":"2026-04-17","related":[{"cvss_score":8.8,"headline":"DotNetNuke (DNN) Remote Code Execution","id":"CVE-2017-9822","kev_date_added":"2021-11-03","published":"2017-07-20"},{"cvss_score":7.5,"headline":"DotNetNuke (DNN) Inadequate Encryption Strength","id":"CVE-2018-15811","kev_date_added":"2021-11-03","published":"2019-07-03"},{"cvss_score":7.5,"headline":"DotNetNuke (DNN) Inadequate Encryption Strength","id":"CVE-2018-18325","kev_date_added":"2021-11-03","published":"2019-07-03"},{"cvss_score":10,"headline":"DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite","id":"CVE-2025-64095","kev_date_added":null,"published":"2025-10-28"},{"cvss_score":10,"headline":"Privilege escalation in n/a","id":"CVE-2006-3601","kev_date_added":null,"published":"2006-07-14"},{"cvss_score":9.8,"headline":"The installation wizard in DotNetNuke (DNN) allows privilege escalation","id":"CVE-2015-2794","kev_date_added":null,"published":"2017-02-06"},{"cvss_score":9.1,"headline":"DotNetNuke.Core Vulnerable to Stored XSS via Module Title","id":"CVE-2026-24838","kev_date_added":null,"published":"2026-01-27"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-20","vendors":["dnnsoftware"]},"summary":"Attackers can exploit identical Host GUIDs in new DNN installations to bypass security controls or impersonate hosts.","url":"https://insights.sbomify.com/CVE-2026-40306/"}