Arbitrary File Upload 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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- published28 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
New CVE NOT AVAILABLE CWE-434 (opens in a new tab)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 Arbitrary File Upload via the file upload process. An attacker can exhaust disk space by uploading arbitrary files without restriction.
Workaround
This vulnerability can be mitigated by removing AddUploadedFileStorage or AddDefaultTempStorage from the configuration to temporarily disable file uploads.