CVE-2026-57578
Received Received - Intake

Authorization Bypass in DotVVM Framework

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: GitHub, Inc.

Description
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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-57578
EUVD
EUVD-2026-77700

Affected Vendors & Products

Showing 9 associated CPEs
Vendor Product Version / Range
dotvvm dotvvm to 4.2.11 (exc)
dotvvm dotvvm to 4.3.15 (exc)
dotvvm dotvvm to 5.0.0-preview09-final (exc)
dotvvm dotvvm 4.2.11
dotvvm dotvvm 4.3.15
dotvvm dotvvm 5.0.0-preview09-final
riganti dotvvm to 4.2.11 (inc)
riganti dotvvm to 4.3.15 (inc)
riganti dotvvm to 5.0.0-preview09-final (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability in DotVVM allows unauthorized access to protected commands, view models, or presenters because the AuthorizeActionFilter does not perform proper authorization checks. Instead of executing these checks, it returns completed tasks, effectively bypassing security controls. The issue is fixed in versions 4.2.11, 4.3.15, and 5.0.0-preview09-final.

Detection Guidance

To detect this vulnerability, check if your DotVVM application uses versions before 4.2.11, 4.3.15, or 5.0.0-preview09-final. Inspect the AuthorizeActionFilter implementation for missing authorization checks. Verify if unauthorized requests can access protected commands or resources without proper authentication.

Impact Analysis

This vulnerability can expose sensitive functionality or data to unauthorized users, potentially leading to data breaches, unauthorized actions, or system compromise. Applications relying on the vulnerable filter may allow attackers to bypass intended access controls without needing special techniques.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations by enabling unauthorized access to protected data or functionality. Failure to enforce proper authorization may result in violations of data protection requirements, leading to legal penalties or reputational damage.

Mitigation Strategies

Update DotVVM to version 4.2.11, 4.3.15, or 5.0.0-preview09-final or later to fix the issue. Replace AuthorizeActionFilter with AuthorizeAttribute as a temporary workaround.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-57578. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart