CVE-2026-57578 json
DotVVM: Missing authorization in AuthorizeActionFilter
published 2026-09-14 55 d ago modified 2026-09-30 39 d ago also EUVD-2026-77700
- cvss
- 9.2
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 55 d ago
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- riganti dotvvm
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
- github.com /riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585
- github.com /riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5
- github.com /riganti/dotvvm/commit/7578cf3459097cbbef0d3fea8a7774509b324112
- github.com /riganti/dotvvm/security/advisories/GHSA-c8qj-jx8j-fg2w
- github.com /riganti/dotvvm/releases/tag/v4.3.15
- github.com /riganti/dotvvm/releases/tag/v5.0.0-preview09
Sources
- CVE List CVE-2026-57578
- NVD CVE-2026-57578
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.