{"answers":{"affected":"2 open source packages ship an affected version, including Umbraco.Cms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-46609 in the wild and no public exploit code.","fix":"Upgrade Umbraco.Cms to 17.4.0 or later.","what":"CVE-2026-46609 is a medium-severity cross-site scripting vulnerability in Umbraco Umbraco Cms, published on 10 Jun 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-2026-46609 and fix it if it is affected.\n\nWhat it is: CVE-2026-46609 is a medium-severity cross-site scripting vulnerability in Umbraco Umbraco Cms, published on 10 Jun 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-2026-46609 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Umbraco.Cms (NuGet): affected from 14.0.0; fixed in 17.4.0\n- Umbraco.Cms (NuGet): affected from 14.0.0; fixed in 17.4.0\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-2026-46609/ (Markdown: https://insights.sbomify.com/CVE-2026-46609/index.md)","id":"CVE-2026-46609","markdown":"https://insights.sbomify.com/CVE-2026-46609/index.md","name":"CVE-2026-46609","record":{"aliases":["GHSA-vr9v-27gg-qgx4"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Umbraco CMS","requires_auth":"low_privilege","summary":"Authenticated users can inject HTML into confirmation dialogs, potentially leading to script execution or account takeover in Umbraco CMS.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"umbraco_cms","vendor":"umbraco"}],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Umbraco is an ASP.NET CMS. From version 14.0.0 to before version 17.4.0, authenticated users are able to inject HTML into an input field, which is rendered in the confirmation dialog without proper output encoding. This issue has been patched in version 17.4.0.","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":"Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog","id":"CVE-2026-46609","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"umbraco:umbraco_cms","products":["umbraco:umbraco_cms"],"type":"xss","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack","id":"CVE-2026-46611"},"packages":[{"ecosystem":"NuGet","fixed":["17.4.0"],"introduced":["14.0.0"],"last_affected":[],"package":"Umbraco.Cms","purl":null,"source":"GHSA-vr9v-27gg-qgx4"},{"ecosystem":"NuGet","fixed":["17.4.0"],"introduced":["14.0.0"],"last_affected":[],"package":"Umbraco.Cms","purl":"pkg:nuget/Umbraco.Cms","source":"GHSA-vr9v-27gg-qgx4"}],"prev":{"headline":"Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)","id":"CVE-2026-46608"},"products":["Umbraco-CMS"],"published":"2026-06-10","related":[{"cvss_score":10,"headline":"Umbraco CMS has an arbitrary file upload vulnerability","id":"CVE-2025-67288","kev_date_added":null,"published":"2025-12-22"},{"cvss_score":9.8,"headline":"File upload in n/a","id":"CVE-2014-10074","kev_date_added":null,"published":"2018-08-27"},{"cvss_score":9.8,"headline":"Server-side request forgery in n/a","id":"CVE-2012-1301","kev_date_added":null,"published":"2017-04-13"},{"cvss_score":9.3,"headline":"Umbraco CMS \u003c 4.7.1 codeEditorSave.asmx RCE","id":"CVE-2012-10054","kev_date_added":null,"published":"2025-08-13"},{"cvss_score":8.8,"headline":"Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users","id":"CVE-2025-32017","kev_date_added":null,"published":"2025-04-08"},{"cvss_score":8.8,"headline":"Umbraco CMS Authenticated File Upload","id":"CVE-2020-9471","kev_date_added":null,"published":"2020-03-16"},{"cvss_score":8.6,"headline":"Umbraco Remote ApplicationURL Overwrite","id":"CVE-2022-22690","kev_date_added":null,"published":"2022-01-18"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-06-10","vendors":["umbraco"]},"summary":"Authenticated users can inject HTML into confirmation dialogs, potentially leading to script execution or account takeover in Umbraco CMS.","url":"https://insights.sbomify.com/CVE-2026-46609/"}