{"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-2025-66625 in the wild and no public exploit code.","fix":"Upgrade Umbraco.Cms to 13.12.1 or later.","what":"CVE-2025-66625 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 9 Dec 2025. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-66625 and fix it if it is affected.\n\nWhat it is: CVE-2025-66625 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 9 Dec 2025. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-66625 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Umbraco.Cms (NuGet): affected from 10.0.0; fixed in 13.12.1\n- Umbraco.Cms (NuGet): affected from 10.0.0; fixed in 13.12.1\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-2025-66625/ (Markdown: https://insights.sbomify.com/CVE-2025-66625/index.md)","id":"CVE-2025-66625","markdown":"https://insights.sbomify.com/CVE-2025-66625/index.md","name":"CVE-2025-66625","record":{"aliases":["GHSA-hfv2-pf68-m33x"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Umbraco CMS","requires_auth":"high_privilege","summary":"Backoffice attackers can enumerate server files and potentially expose NTLM hashes via predictable temporary file paths in Umbraco CMS.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"umbraco_cms","vendor":"umbraco"}],"cvss":{"score":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-552","name":"Files or Directories Accessible to External Parties"},{"id":"CWE-377","name":"DEPRECATED: Insecure Temporary File"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Umbraco is an ASP.NET CMS. Due to unsafe handling and deletion of temporary files in versions 10.0.0 through 13.12.0, during the dictionary upload process an attacker with access to the backoffice can trigger predictable requests to temporary file paths. The application’s error responses (HTTP 500 when a file exists, 404 when it does not) allow the attacker to enumerate the existence of arbitrary files on the server’s filesystem. This vulnerability does not allow reading or writing file contents. In certain configurations, incomplete clean-up of temporary upload files may additionally expose the NTLM hash of the Windows account running the Umbraco application. This issue is fixed in version 13.12.1.","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 Vulnerable to Improper File Access and Credential Exposure through Dictionary Import Functionality","id":"CVE-2025-66625","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"umbraco:umbraco_cms","products":["umbraco:umbraco_cms"],"type":"information_disclosure","year":"2025"},"n_packages":2,"n_references":2,"next":{"headline":"argoproj/argo-workflows is vulnerable to RCE via ZipSlip and symbolic links","id":"CVE-2025-66626"},"packages":[{"ecosystem":"NuGet","fixed":["13.12.1"],"introduced":["10.0.0"],"last_affected":[],"package":"Umbraco.Cms","purl":null,"source":"GHSA-hfv2-pf68-m33x"},{"ecosystem":"NuGet","fixed":["13.12.1"],"introduced":["10.0.0"],"last_affected":[],"package":"Umbraco.Cms","purl":"pkg:nuget/Umbraco.Cms","source":"GHSA-hfv2-pf68-m33x"}],"prev":{"headline":"BACnet-stack MS/TP reply matcher OOB read","id":"CVE-2025-66624"},"products":["Umbraco-CMS"],"published":"2025-12-09","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":"2025-12-12","vendors":["umbraco"]},"summary":"Backoffice attackers can enumerate server files and potentially expose NTLM hashes via predictable temporary file paths in Umbraco CMS.","url":"https://insights.sbomify.com/CVE-2025-66625/"}