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CVE-2026-57581— DotVVM: Unrestricted file upload

Quick assessment

Affected
riganti dotvvm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DotVVM 是一个用于 Web 应用的开源 MVVM 框架。在 4.2.11、4.3.15 和 5.0.0-preview09-final 之前的版本中，配置了文件上传存储的应用程序允许未认证的用户将文件直接提交至 DotvvmFileUploadMiddleware，而无需由 FileUpload 组件生成的 X-DotVVM-UploadToken。攻击者可以反复上传文件，从而填满应用存储，导致拒绝服务（DoS）。此外，可以通过 DotvvmConfiguration.Security.AuthorizeFi

CVSS 5.3 · Medium

Affected Version Matrix 3

VendorProduct Version RangeStatus
riganti dotvvm < 4.2.11 affected
>= 4.3.0, < 4.3.15 affected
>= 5.0.0-preview01, < 5.0.0-preview09-final affected
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I. Basic Information for CVE-2026-57581

Vulnerability Information
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Vulnerability Title
DotVVM: Unrestricted file upload
Source: CVE Program / CVE List V5
Vulnerability 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, 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
riganti dotvvm < 4.2.11 -

II. Public POCs for CVE-2026-57581

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III. Intelligence Information for CVE-2026-57581

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Patches & Fixes for CVE-2026-57581 (2)

Vendor Advisories for CVE-2026-57581 (1)

Vendor Pages for CVE-2026-57581 (1)

Same Patch Batch · riganti · 2026-09-14 · 3 CVEs total

CVE-2026-57578 9.2 CRITICAL DotVVM: Missing authorization in AuthorizeActionFilter
CVE-2026-57577 8.2 HIGH DotVVM: ReDOS in routing

IV. Related Vulnerabilities

Same product: dotvvm
Same vendor: riganti
Same weakness: CWE-434

V. Comments for CVE-2026-57581

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