Umbraco <7.4.0- Server-Side Request Forgery

Umbraco before version 7.4.0 contains a server-side request forgery vulnerability in feedproxy.aspx that allows attackers to send arbitrary HTTP GET requests via http://local/Umbraco/feedproxy.aspx?url=http://127.0.0.1:80/index. id: CVE-2015-8813 info: name: Umbraco 7.4.0- Server-Side Request...

CVE-2025-54425

CVE-2025-54425 affects Umbraco’s Delivery API. When public access is restricted by an API key header and output caching is enabled, the cache does not vary by the API key header, potentially returning cached responses to users without a valid API key if a prior request with a valid key occurred. ...

CVE-2025-48953

Umbraco CMS (ASP.NET) has a file-upload bypass vulnerability: in versions 14.0.0 up to but not including 15.4.2 and 16.0.0, an API request can be manipulated to upload a file that doesn’t conform to the configured allowed extensions. The issue is fixed in 15.4.2 and 16.0.0. There are no publicly ...

CVE-2024-43376

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...

CVE-2024-35218 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 versions 8.18.13, 10.8.4, 12.3.7, 13.1.1 by implementi...

CVE-2024-29035

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...

CVE-2024-29035 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...

Information disclosure

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 issue...

CVE-2023-37267 Umbraco allows possible Admin-level access to backoffice without Auth under rare conditions

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...