{"answers":{"affected":"2 open source packages ship an affected version, including UmbracoCms. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47776 exists.","fix":"No fix has been published for CVE-2021-47776 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47776 is a medium-severity server-side request forgery vulnerability in Umbraco Umbraco Cms, published on 15 Jan 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-2021-47776 and fix it if it is affected.\n\nWhat it is: CVE-2021-47776 is a medium-severity server-side request forgery vulnerability in Umbraco Umbraco Cms, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47776 exists.\n\nAffected packages and fixed versions:\n- UmbracoCms (NuGet): affected all versions; no fix listed\n- UmbracoCms (NuGet): affected all versions; no fix listed\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-2021-47776/ (Markdown: https://insights.sbomify.com/CVE-2021-47776/index.md)","id":"CVE-2021-47776","markdown":"https://insights.sbomify.com/CVE-2021-47776/index.md","name":"CVE-2021-47776","record":{"aliases":["GHSA-h66j-xm43-47pp"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Umbraco CMS","requires_auth":"none","summary":"Attackers can exploit SSRF in Umbraco CMS dashboard endpoints to force the server to make unauthorized requests to external hosts.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"umbraco_cms","vendor":"umbraco"}],"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:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Umbraco CMS v8.14.1 contains a server-side request forgery vulnerability that allows attackers to manipulate baseUrl parameters in multiple dashboard and help controller endpoints. Attackers can craft malicious requests to the GetContextHelpForPage, GetRemoteDashboardContent, and GetRemoteDashboardCss endpoints to trigger unauthorized server-side requests to external hosts.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Umbraco v8.14.1 - 'baseUrl' SSRF","id":"CVE-2021-47776","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":"umbraco:umbraco_cms","products":["umbraco:umbraco_cms"],"type":"ssrf","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Build Smart ERP 21.0817 - 'eidValue' SQL Injection (Unauthenticated)","id":"CVE-2021-47777"},"packages":[{"ecosystem":"NuGet","fixed":[],"introduced":[],"last_affected":[],"package":"UmbracoCms","purl":null,"source":"GHSA-h66j-xm43-47pp"},{"ecosystem":"NuGet","fixed":[],"introduced":[],"last_affected":[],"package":"UmbracoCms","purl":"pkg:nuget/UmbracoCms","source":"GHSA-h66j-xm43-47pp"}],"prev":{"headline":"YouTube Video Grabber 1.9.9.1 - Buffer Overflow (SEH)","id":"CVE-2021-47775"},"products":["Umbraco"],"published":"2026-01-15","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["umbraco"]},"summary":"Attackers can exploit SSRF in Umbraco CMS dashboard endpoints to force the server to make unauthorized requests to external hosts.","url":"https://insights.sbomify.com/CVE-2021-47776/"}