Vendor
umbraco
52 known vulnerabilities.
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Medium 4.6
Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog
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.…
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Medium 5.4
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled quer…
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Medium 6.7
Umbraco has Stored XSS in UFM Rendering Pipeline via Permissive DOMPurify Attribute Filtering
Umbraco is an ASP.NET CMS. From 16.2.0 to before 16.5.1 and 17.2.2, An authenticated backoffice user with access to Settings can inject malicious HTML into property type descriptions. Due to an overly permissive attributeNameCheck configuration (/.+/) in the …
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Medium 5.4
Umbraco Backoffice API Allows Unauthorized Modification of Domain Data
Umbraco is an ASP.NET CMS. From 14.0.0 to before 16.5.1 and 17.2.2, A broken object-level authorization vulnerability exists in a backoffice API endpoint that allows authenticated users to assign domain-related data to content nodes without proper authorizati…
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Medium 6.0
Umbraco.Forms has path traversal and file enumeration vulnerability in Linux/Mac
Umbraco Forms is a form builder that integrates with the Umbraco content management system. It's possible for an authenticated backoffice-user to enumerate and traverse paths/files on the systems filesystem and read their contents, on Mac/Linux Umbraco instal…
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Medium 5.3
Umbraco v8.14.1 - 'baseUrl' SSRF
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, GetRemote…
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Medium 4.9
Umbraco Vulnerable to Improper File Access and Credential Exposure through Dictionary Import Functionality
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 …
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Medium 5.3
Umbraco's Delivery API allows for cached requests to be returned with an invalid API key
Umbraco is an ASP.NET CMS. In versions 13.0.0 through 13.9.2, 15.0.0 through 15.4.1 and 16.0.0 through 16.1.0, the content delivery API can be restricted from public access where an API key must be provided in a header to authorize the request. It's also poss…
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Medium 5.3
Umbraco.Cms Vulnerable to Disclosure of Configured Password Requirements
Umbraco, a free and open source .NET content management system, has a vulnerability in versions 10.0.0 through 10.8.10 and 13.0.0 through 13.9.1. Via a request to an anonymously authenticated endpoint it's possible to retrieve information about the configured…
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Medium 5.5
Umbraco Vulnerable to By-Pass of Configured Allowed Extensions for File Uploads
Umbraco is an ASP.NET content management system (CMS). Starting in version 14.0.0 and prior to versions 15.4.2 and 16.0.0, it's possible to upload a file that doesn't adhere with the configured allowable file extensions via a manipulated API request. The issu…
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Medium 5.3
Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8…
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Medium 4.9
Umbraco Allows a Restricted Editor User to Delete Media Item or Access Unauthorized Content
Umbraco is a free and open source .NET content management system. In versions of Umbraco's web backoffice program prior to versions 10.8.9 and 13.7.1, via manipulation of backoffice API URLs, it's possible for authenticated backoffice users to retrieve or del…
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Medium 4.3
Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality
Umbraco is a free and open source .NET content management system. An improper API access control issue has been identified Umbraco's API management package prior to versions 15.2.3 and 14.3.3, allowing low-privilege, authenticated users to create and update d…
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Medium 4.6
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice compon…
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Medium 5.3CVE-2025-24011 Public exploit
Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management …
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Medium 5.8
Short and Long Answer Fields Are Not Validated Server-Side For Maximum Length in Umbraco.Forms
Umbraco.Forms is a web form framework written for the nuget ecosystem. Character limits configured by editors for short and long answer fields are validated only client-side, not server-side. This issue has been patched in versions 8.13.16, 10.5.7, 13.2.2, an…
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Medium 4.3
Umbraco CMS Dashboard frame cross site scripting
A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id{} of the component Dashboard. The manipulation of the argument cult…
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Medium 4.2
Umbraco CMS Has Incomplete Server Termination During Explicit Sign-Out
Umbraco is a free and open source .NET content management system. In versions on the 13.x branch prior to 13.5.2 and versions on the 10.x branch prior to 10.8.7, during an explicit sign-out, the server session is not fully terminated. Versions 13.5.2 and 10.8…
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Medium 4.6
Potential Code Execution Risk When Viewing SVG Files in Full Screen in Backoffice
Umbraco, a free and open source .NET content management system, has a remote code execution issue in versions on the 13.x branch prior to 13.5.2, 10.x prior to 10.8.7, and 8.x prior to 8.18.15. There is a potential risk of code execution for Backoffice users …
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Medium 4.2
Umbraco CMS logout page displayed before session expiration
Umbraco, a free and open source .NET content management system, has an insufficient session expiration issue in versions on the 13.x branch prior to 13.5.2, 10.x prior to 10.8.7, and 8.x prior to 8.18.15. The Backoffice displays the logout page with a session…
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Medium 4.2
Umbraco CMS vulnerable to stored Cross-site Scripting in the "dictionary name" on Dictionary section
Umbraco, a free and open source .NET content management system, has a cross-site scripting vulnerability starting in version 14.0.0 and prior to versions 14.3.1 and 15.0.0. This can be leveraged to gain access to higher-privilege endpoints, e.g. if you get a …
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Medium 5.4
Umbraco CMS Improper Access Control vulnerability
Umbraco CMS is an ASP.NET CMS. An authenticated user can access a few unintended endpoints. This issue is fixed in 14.1.2.
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Medium 4.3
Umbraco CMS vulnerable to Generation of Error Message Containing Sensitive Information
Umbraco is an ASP.NET CMS. Some endpoints in the Management API can return stack trace information, even when Umbraco is not in debug mode. This vulnerability is fixed in 14.1.2.
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Medium 5.4
Stored Cross-site Scripting on Print Functionality in Umbraco Commerce
Umbraco Commerce is an open source dotnet ecommerce solution. In affected versions there exists a stored Cross-site scripting (XSS) issue which would enable attackers to inject malicious code into Print Functionality. This issue has been addressed in versions…
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Medium 4.2
Umbraco CMS Vulnerable to Stored XSS on Content Page Through Markdown Editor Preview Pane
Umbraco CMS is an ASP.NET CMS used by more than 730.000 websites. Stored Cross-site scripting (XSS) enable attackers that have access to backoffice to bring malicious content into a website or application. This vulnerability has been patched in version(s) 8.1…
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Medium 6.1
Open Redirect Bypass Protection
Umbraco is an ASP.NET CMS used by more than 730.000 websites. Umbraco has an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice before the vulnerable is exposed. This vulnerability has…
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Medium 5.5
Umbraco Workflow's Backoffice users can execute arbitrary SQL
Umbraco workflow provides workflows for the Umbraco content management system. Prior to versions 10.3.9, 12.2.6, and 13.0.6, an Umbraco Backoffice user can modify requests to a particular API endpoint to include SQL, which will be executed by the server. Umbr…
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Medium 4.1
Umbraco's Blind SSRF Leads to Port Scan by using Webhooks
Umbraco is an ASP.NET CMS. Failing webhooks logs are available when solution is not in debug mode. Those logs can contain information that is critical. This vulnerability is fixed in 13.1.1.
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Medium 5.3
Umbraco CMS brute force exploit can be used to collect valid usernames
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, a brute force exploit can be used to collect valid usernames. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this iss…
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Medium 5.4
Umbraco CMS vulnerable to Privilege Escalation using Spoofing
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, users with low privileges (Editor, etc.) are able to access some unintended endpoints. Versions 8.18.10, 10.8.1, and 12.3.4 con…
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Medium 4.3
Umbraco contains a DOM-XSS
Umbraco is an ASP.NET content management system (CMS). Starting in 10.0.0 and prior to versions 10.8.1 and 12.3.4, Umbraco contains a cross-site scripting (XSS) vulnerability enabling attackers to bring malicious content into a website or application. Version…
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Medium 4.3
Umbraco CMS Backoffice User can bypass "Publish" restriction
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.3.0, Backoffice users with send for approval permission but not publish permission are able to publish in some scenarios. Versions 8…
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Medium 6.8
Umbraco Password Reset URL Poison
The password reset component deployed within Umbraco uses the hostname supplied within the request host header when building a password reset URL. It may be possible to manipulate the URL sent to Umbraco users when so that it points to the attackers server th…