{"answers":{"affected":"12 open source packages ship an affected version, including Umbraco.Cms.Infrastructure and Umbraco.Cms.Web.BackOffice. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-37267 in the wild and no public exploit code.","fix":"Upgrade Umbraco.Cms.Infrastructure to a fixed version for your release line: 11.4.2, 12.0.1 or 10.6.1.","what":"CVE-2023-37267 is a high-severity authentication bypass vulnerability in Umbraco Umbraco Cms, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-37267 and fix it if it is affected.\n\nWhat it is: CVE-2023-37267 is a high-severity authentication bypass vulnerability in Umbraco Umbraco Cms, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-37267 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Umbraco.Cms.Infrastructure (NuGet): affected from 11.0.0; fixed in 11.4.2\n- Umbraco.Cms.Infrastructure (NuGet): affected from 11.0.0; fixed in 11.4.2\n- Umbraco.Cms.Infrastructure (NuGet): affected from 12.0.0; fixed in 12.0.1\n- Umbraco.Cms.Infrastructure (NuGet): affected from 12.0.0; fixed in 12.0.1\n- Umbraco.Cms.Infrastructure (NuGet): affected from 9.0.0; fixed in 10.6.1\n- Umbraco.Cms.Infrastructure (NuGet): affected from 9.0.0; fixed in 10.6.1\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 11.0.0; fixed in 11.4.2\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 11.0.0; fixed in 11.4.2\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 12.0.0; fixed in 12.0.1\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 12.0.0; fixed in 12.0.1\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 9.0.0; fixed in 10.6.1\n- Umbraco.Cms.Web.BackOffice (NuGet): affected from 9.0.0; fixed in 10.6.1\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-2023-37267/ (Markdown: https://insights.sbomify.com/CVE-2023-37267/index.md)","id":"CVE-2023-37267","markdown":"https://insights.sbomify.com/CVE-2023-37267/index.md","name":"CVE-2023-37267","record":{"aliases":["GHSA-h8wc-r4jh-mg7m"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Umbraco CMS","requires_auth":"none","summary":"Attackers can gain unauthorized admin access to the Umbraco backoffice under rare conditions following a restart.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"umbraco_cms","vendor":"umbraco"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Umbraco is a ASP.NET CMS. Under rare conditions a restart of Umbraco can allow unauthorized users access to admin-level permissions. This vulnerability was patched in versions 10.6.1, 11.4.2 and 12.0.1.","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 allows possible Admin-level access to backoffice without Auth under rare conditions","id":"CVE-2023-37267","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"umbraco:umbraco_cms","products":["umbraco:umbraco_cms"],"type":"auth_bypass","year":"2023"},"n_packages":12,"n_references":4,"next":{"headline":"User login confusion with SSO in warpgate","id":"CVE-2023-37268"},"packages":[{"ecosystem":"NuGet","fixed":["11.4.2"],"introduced":["11.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["11.4.2"],"introduced":["11.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":"pkg:nuget/Umbraco.Cms.Infrastructure","source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["12.0.1"],"introduced":["12.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["12.0.1"],"introduced":["12.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":"pkg:nuget/Umbraco.Cms.Infrastructure","source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["10.6.1"],"introduced":["9.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["10.6.1"],"introduced":["9.0.0"],"last_affected":[],"package":"Umbraco.Cms.Infrastructure","purl":"pkg:nuget/Umbraco.Cms.Infrastructure","source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["11.4.2"],"introduced":["11.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["11.4.2"],"introduced":["11.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":"pkg:nuget/Umbraco.Cms.Web.BackOffice","source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["12.0.1"],"introduced":["12.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["12.0.1"],"introduced":["12.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":"pkg:nuget/Umbraco.Cms.Web.BackOffice","source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["10.6.1"],"introduced":["9.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":null,"source":"GHSA-h8wc-r4jh-mg7m"},{"ecosystem":"NuGet","fixed":["10.6.1"],"introduced":["9.0.0"],"last_affected":[],"package":"Umbraco.Cms.Web.BackOffice","purl":"pkg:nuget/Umbraco.Cms.Web.BackOffice","source":"GHSA-h8wc-r4jh-mg7m"}],"prev":{"headline":"Weak json web token (JWT) secrets in CasaOS","id":"CVE-2023-37266"},"products":["Umbraco-CMS"],"published":"2023-07-13","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":"total"},"state":"PUBLISHED","updated":"2024-10-31","vendors":["umbraco"]},"summary":"Attackers can gain unauthorized admin access to the Umbraco backoffice under rare conditions following a restart.","url":"https://insights.sbomify.com/CVE-2023-37267/"}