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microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg: 2 vulnerabilities (highest severity is: 9.2) [master] (reachable) #48

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microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg: 2 vulnerabilities (highest severity is: 9.2) [master] (reachable)#48

Description

@mend-developer-platform-dev
mend-developer-platform-dev
bot
opened on Sep 28, 2025
📂 Vulnerable Library - microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg

ASP.NET Core cookie policy classes to control the behavior of cookies.

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.cookiepolicy/2.0.1/microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg

Findings

Finding Severity 🎯 CVSS Exploit Maturity EPSS Library Type Fixed in Remediation Available Reachability
CVE-2021-26701 🟣 Critical 9.2 Unproven 1.7% system.text.encodings.web.4.4.0.nupkg Transitive N/A ❌ Reachable
CVE-2020-1045 🔴 High 7.7 Proof of concept 20.4% microsoft.aspnetcore.http.2.0.1.nupkg Transitive N/A ❌ Unreachable

Details

🟣CVE-2021-26701

Vulnerable Library - system.text.encodings.web.4.4.0.nupkg

Provides types for encoding and escaping strings for use in JavaScript, HyperText Markup Language (H...

Library home page: https://api.nuget.org/packages/system.text.encodings.web.4.4.0.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/system.text.encodings.web/4.4.0/system.text.encodings.web.4.4.0.nupkg

Dependency Hierarchy:

  • microsoft.aspnetcore.authentication.jwtbearer.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.2.0.1.nupkg
      • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
        • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
          • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
            • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.identity.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.identity.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.cookies.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.2.0.1.nupkg
          • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
            • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
              • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
                • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.azureappservices.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.session.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecaching.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.spaservices.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.microsoftaccount.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
      • microsoft.aspnetcore.http.2.0.1.nupkg
        • microsoft.aspnetcore.webutilities.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.diagnostics.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
      • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.middlewareanalysis.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.diagnostics.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.rewrite.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.facebook.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.localization.routing.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.routing.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.applicationinsights.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.razor.runtime.2.0.1.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.openidconnect.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.dataprotection.azurestorage.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.websockets.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.extensions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.staticfiles.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.visualstudio.web.browserlink.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
      • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.formatters.xml.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
      • microsoft.aspnetcore.routing.2.0.1.nupkg
        • microsoft.aspnetcore.routing.abstractions.2.0.1.nupkg
          • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
            • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.owin.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecompression.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.extensions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.google.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.dataprotection.extensions.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.razor.viewcompilation.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • microsoft.aspnetcore.http.2.0.1.nupkg
        • microsoft.aspnetcore.webutilities.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.twitter.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

Reachability Analysis

This vulnerability is potentially reachable:

- dvcsharp_core_api.AuthorizationsController (Application)
    - Microsoft.AspNetCore.Mvc.Controller (Extension)
        - Microsoft.AspNetCore.Http.HttpContext (Extension)
            - Microsoft.AspNetCore.Http.HttpRequest (Extension)
                - Microsoft.AspNetCore.Http.QueryString (Extension)
                    -> ❌ System.Text.Encodings.Web.TextEncoder (Vulnerable Component)

Vulnerability Details

.NET Core Remote Code Execution Vulnerability

Publish Date: Feb 25, 2021 11:02 PM

URL: CVE-2021-26701

Threat Assessment

Exploit Maturity:Unproven

EPSS:1.7%

Score: 9.2

Suggested Fix

Type: Upgrade version

Origin: GHSA-ghhp-997w-qr28

Release Date: Feb 25, 2021 11:02 PM

Fix Resolution : System.Text.Encodings.Web - 4.7.2,System.Text.Encodings.Web - 5.0.1,System.Text.Encodings.Web - 4.5.1

🔴CVE-2020-1045

Vulnerable Library - microsoft.aspnetcore.http.2.0.1.nupkg

ASP.NET Core default HTTP feature implementations.

Library home page: https://api.nuget.org/packages/microsoft.aspnetcore.http.2.0.1.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.http/2.0.1/microsoft.aspnetcore.http.2.0.1.nupkg

Dependency Hierarchy:

  • microsoft.aspnetcore.authentication.jwtbearer.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.identity.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.identity.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.cookies.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.2.0.1.nupkg
          • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
            • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.azureappservices.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.azureappservicesintegration.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.server.kestrel.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.facebook.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.applicationinsights.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.openidconnect.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecaching.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.spaservices.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.formatters.xml.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
      • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.owin.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.google.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.microsoftaccount.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.razor.viewcompilation.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.twitter.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

Reachability Analysis

The vulnerable code is unreachable

Vulnerability Details

A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.

The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.

The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.

Publish Date: Sep 11, 2020 12:00 AM

URL: CVE-2020-1045

Threat Assessment

Exploit Maturity:Proof of concept

EPSS:20.4%

Score: 7.7

Suggested Fix

Type: Upgrade version

Origin: GHSA-hxrm-9w7p-39cc

Release Date: Sep 11, 2020 12:00 AM

Fix Resolution : Microsoft.AspNetCore.Http - 2.1.22,Microsoft.AspNetCore.App.Runtime.win-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.osx-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-arm - 3.1.8,Microsoft.AspNetCore.App - 2.1.22,Microsoft.AspNetCore.App.Runtime.win-arm - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-musl-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.win-x64 - 3.1.8,Microsoft.Owin - 4.1.1,Microsoft.AspNetCore.App.Runtime.win-x86 - 3.1.8

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