Missing Authorization Affecting dotvvm package, versions [,4.2.11)[4.3.0,4.3.15)[5.0.0-preview02-final,5.0.0-preview09-final)
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Test your applications- Snyk IDSNYK-DOTNET-DOTVVM-17661063
- published28 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
New CVE NOT AVAILABLE CWE-862 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade DotVVM to version 4.2.11, 4.3.15, 5.0.0-preview09-final or higher.
Overview
DotVVM is an open source ASP.NET-based framework which allows to build interactive web apps easily by using mostly C# and HTML.
Affected versions of this package are vulnerable to Missing Authorization in the AuthorizeActionFilter process. An attacker can gain unauthorized access to protected resources by sending requests that should require authorization, as the filter fails to enforce access controls.
Workaround
This vulnerability can be mitigated by using the AuthorizeAttribute instead of the affected filter.