DotVVM: Missing authorization in AuthorizeActionFilter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| riganti | dotvvm | before 4.2.11; 4.3.0 to before 4.3.15; 5.0.0-preview01 to before 5.0.0-preview09-final | 4.2.11, 4.3.15, 5.0.0-preview09-final | Patch available | CNA |
- dotvvm Vendorriganti Affected before 4.2.11; 4.3.0 to before 4.3.15; 5.0.0-preview01 to before 5.0.0-preview09-final Fixed in 4.2.11, 4.3.15, 5.0.0-preview09-final Patch available CNA
Remediation
- Fix · CNA dotvvm (riganti) Fixed in 4.2.11, 4.3.15, 5.0.0-preview09-final
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57578
- 2026-11-04 EPSS moved to the 50th–90th percentile
References
Other 6
- https://github.com/riganti/dotvvm/security/advisories/GHSA-c8qj-jx8j-fg2w
- https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585
- https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5
- https://github.com/riganti/dotvvm/commit/7578cf3459097cbbef0d3fea8a7774509b324112
- https://github.com/riganti/dotvvm/releases/tag/v4.3.15
- https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09
More riganti vulnerabilities
- TI-2026-41428 DotVVM: ReDOS in routing CVSS 4.0HIGH 8.2
- TI-2026-41432 DotVVM: Unrestricted file upload CVSS 3.1MEDIUM 5.3
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences