Medium 5.3Published Sep 14, 2026

CVE-2026-57581DotVVM: Unrestricted file upload

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects riganti dotvvm. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for riganti dotvvm

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

riganti dotvvm riganti:dotvvm (from the name)	before 4.2.11; from 4.3.0, < 4.3.15; from 5.0.0-preview01, < 5.0.0-preview09-final	CNA record

References

https://github.com/riganti/dotvvm/security/advisories/GHSA-2rm3-333w-xvc4x-refsource-confirm
https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585x-refsource-misc
https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5x-refsource-misc
https://github.com/riganti/dotvvm/commit/6af982bbe3b00bdac00f1c0efe9365d52db642efx-refsource-misc
https://github.com/riganti/dotvvm/releases/tag/v4.3.15x-refsource-misc
https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.