Vendor
umbraco
52 known vulnerabilities.
umbraco at a glance
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 0 | 0 |
| Oct 2026 | 2 | 0 |
| Sep 2026 | 1 | 0 |
| Aug 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 2 | 0 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 3 | 0 |
| Feb 2026 | 1 | 0 |
| Jan 2026 | 3 | 0 |
| Dec 2025 | 1 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 1 | 1 |
| Jul 2025 | 1 | 0 |
| Jun 2025 | 2 | 0 |
| May 2025 | 2 | 0 |
| Apr 2025 | 1 | 0 |
| Mar 2025 | 2 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 3 | 0 |
| Dec 2024 | 0 | 0 |
Products
52 results · Feed
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High 7.5
Umbraco CMS before 17.7.2 and 18.2.2 Account Takeover via Host Header Poisoning
Umbraco CMS before 17.7.2 and 18.2.2 contains an authentication bypass vulnerability that allows unauthenticated attackers to register attacker-controlled OAuth redirect URIs by poisoning the Host header. Attackers send signed-in users authorization links usi…
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Low 3.7
Umbraco CMS before 17.7.1 and 18.2.1 Missing Authorization on SignalR Hubs
Umbraco CMS before 17.7.1 and 18.2.1 contains a missing authorization vulnerability that allows unauthenticated clients to connect to the backoffice PreviewHub and BackofficeHub SignalR hubs. Attackers can complete the SignalR negotiate step and receive refre…
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High 8.7
Umbraco: Delivery API leaks protected (Public Access) content through Content Picker / Multi-Node Tree Picker expansion
Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties…
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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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High 7.2
Umbraco Affected by Vertical Privilege Escalation via Missing Authorization Checks
Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and 17.2.2, A privilege escalation vulnerability has been identified in Umbraco CMS. Under certain conditions, authenticated backoffice users with permission to manage users, may be able to elevate their…
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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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High 7.5
Umbraco.Engage.Forms Allows Unauthorized Access to Multiple API Endpoints
Umbraco Engage is a business intelligence platform. A vulnerability has been identified in Umbraco Engage prior to versions 16.2.1 and 17.1.1 where certain API endpoints are exposed without enforcing authentication or authorization checks. The affected endpoi…
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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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High 7.5
UmbracoForms Vulnerable to Remote Code Execution via Untrusted WSDL Compilation in Dynamic SOAP Client Generation
In Umbraco UmbracoForms through 8.13.16, an authenticated attacker can supply a malicious WSDL (aka Webservice) URL as a data source for remote code execution.
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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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Critical 9.3CVE-2012-10054 Public exploit
Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE
Umbraco CMS versions prior to 4.7.1 are vulnerable to unauthenticated remote code execution via the codeEditorSave.asmx SOAP endpoint, which exposes a SaveDLRScript operation that permits arbitrary file uploads without authentication. By exploiting a path tra…
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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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Low 2.3
Umbraco.Forms has HTML injection vulnerability in 'Send email' workflow
Umbraco Forms is a form builder that integrates with the Umbraco content management system. Starting in the 7.x branch and prior to versions 13.4.2 and 15.1.2, the 'Send email' workflow does not HTML encode the user-provided field values in the sent email mes…
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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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High 8.8
Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Umbraco is a free and open source .NET content management system. Authenticated users to the Umbraco backoffice are able to craft management API request that exploit a path traversal vulnerability to upload files into a incorrect location. The issue affects U…
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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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None 0.0
Umbraco CMS Improper Access Control Vulnerability Allows Low-Privilege Users to Access Webhook API
Umbraco, a free and open source .NET content management system, has an improper access control issue starting in version 14.0.0 and prior to version 14.3.0. The issue allows low-privilege users to access the webhook API and retrieve information that should be…
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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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Low 2.7
Stored Cross-site Scripting on Components of Umbraco Forms
Umbraco Commerce is an open source dotnet web forms solution. In affected versions an authenticated user that has access to edit Forms may inject unsafe code into Forms components. This issue can be mitigated by configuring TitleAndDescription:AllowUnsafeHtml…
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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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Low 3.7
Umbraco possible user enumeration vulnerability
Umbraco is an ASP.NET content management system. Umbraco 10 prior to 10.8.4 with access to the native login screen is vulnerable to a possible user enumeration attack. This issue was fixed in version 10.8.5. As a workaround, one may disable the native login s…