CVE-2026-57581
Published:September 14, 2026
Updated:September 22, 2026
DotVVM is an open source MVVM framework for web applications. Prior to 4.2.11, 4.3.15, and 5.0.0-preview09-final, applications with configured file upload storage allow unauthenticated users to submit files directly to DotvvmFileUploadMiddleware without an X-DotVVM-UploadToken generated by the FileUpload component. An attacker can repeatedly upload files and fill application storage, causing denial of service. DotvvmConfiguration.Security.AuthorizeFileUpload can additionally restrict which users may upload files. This issue is fixed in versions 4.2.11, 4.3.15, and 5.0.0-preview09-final.
Affected Packages
https://github.com/riganti/dotvvm.git (GITHUB):
Affected version(s) >=v4.3.0 <v4.3.15Fix Suggestion:
Update to version v4.3.15dotvvm (NUGET):
Affected version(s) >=5.0.0-preview01-final <5.0.0-preview09-finalFix Suggestion:
Update to version 5.0.0-preview09-finaldotvvm (NUGET):
Affected version(s) >=4.3.0 <4.3.15Fix Suggestion:
Update to version 4.3.15dotvvm (NUGET):
Affected version(s) >=4.0.0 <4.2.11Fix Suggestion:
Update to version 4.2.11Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Unrestricted Upload of File with Dangerous Type
EPSS
Base Score:
0.44