{"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-2026-40321 in the wild and no public exploit code.","fix":"Upgrade DotNetNuke.Core to 10.2.2 or later.","what":"CVE-2026-40321 is a high-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 17 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-40321 and fix it if it is affected.\n\nWhat it is: CVE-2026-40321 is a high-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 17 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-40321 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- DotNetNuke.Core (NuGet): affected all versions; fixed in 10.2.2\n- DotNetNuke.Core (NuGet): affected all versions; 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-2026-40321/ (Markdown: https://insights.sbomify.com/CVE-2026-40321/index.md)","id":"CVE-2026-40321","markdown":"https://insights.sbomify.com/CVE-2026-40321/index.md","name":"CVE-2026-40321","record":{"aliases":["GHSA-ffq7-898w-9jc4"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"DNN CMS","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts via SVG uploads in DNN, potentially compromising user accounts and executing code.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"dotnetnuke","vendor":"dnnsoftware"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-87","name":"Improper Neutralization of Alternate XSS Syntax"}],"description":"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.","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":"DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload","id":"CVE-2026-40321","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"dnnsoftware:dotnetnuke","products":["dnnsoftware:dotnetnuke"],"type":"xss","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"SiYuan: Mermaid `javascript:` Link Injection Leads to Stored XSS and Electron RCE","id":"CVE-2026-40322"},"packages":[{"ecosystem":"NuGet","fixed":["10.2.2"],"introduced":["0"],"last_affected":[],"package":"DotNetNuke.Core","purl":null,"source":"GHSA-ffq7-898w-9jc4"},{"ecosystem":"NuGet","fixed":["10.2.2"],"introduced":["0"],"last_affected":[],"package":"DotNetNuke.Core","purl":"pkg:nuget/DotNetNuke.Core","source":"GHSA-ffq7-898w-9jc4"}],"prev":{"headline":"Giskard has an Unsandboxed Jinja2 Template Rendering in ConformityCheck","id":"CVE-2026-40320"},"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-22","vendors":["dnnsoftware"]},"summary":"Attackers can inject malicious scripts via SVG uploads in DNN, potentially compromising user accounts and executing code.","url":"https://insights.sbomify.com/CVE-2026-40321/"}