CVE-2026-57581 json
DotVVM: Unrestricted file upload
published 4mo ago modified last mo. also EUVD-2026-77698 , GHSA-2rm3-333w-xvc4
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository riganti/dotvvm. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- 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, 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.
Patch / fix
Is CVE-2026-57581 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected products
- riganti dotvvm
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- github.com /riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585
- github.com /riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5
- github.com /riganti/dotvvm/commit/6af982bbe3b00bdac00f1c0efe9365d52db642ef
-
github.com
/riganti/dotvvm/security/advisories/GHSA-2rm3-333w-xvc4
advisory
- github.com /riganti/dotvvm/releases/tag/v4.3.15
- github.com /riganti/dotvvm/releases/tag/v5.0.0-preview09
Sources
- CVE List CVE-2026-57581
- NVD CVE-2026-57581
- Maintainer advisory GHSA-2rm3-333w-xvc4
Fencer Intel 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.
The maintainers of riganti/dotvvm published their own advisory on GitHub. Reviewed sources take precedence over it.