CVE-2026-57578
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, AuthorizeActionFilter performs no authorization because its explicit ICommandActionFilter.OnCommandExecutingAsync, IViewModelActionFilter.OnViewModelCreatedAsync, and IPresenterActionFilter.OnPresenterExecutingAsync implementations return completed tasks instead of invoking the corresponding checks. Applications relying on this filter can therefore expose protected commands, view models, or presenters to unauthorized requests without any special bypass technique. AuthorizeAttribute correctly implements the same interfaces and can be used as a workaround. 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) >=4.0.0 <4.2.11Fix Suggestion:
Update to version 4.2.11dotvvm (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 4.3.15Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.44