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Add info about pre-loading to the Sec-Fetch-Dest GET check #1875

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merged 1 commit into from
Nov 3, 2024
Merged

Add info about pre-loading to the Sec-Fetch-Dest GET check #1875

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5 changes: 4 additions & 1 deletion src/Framework/Framework/Hosting/DotvvmPresenter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -537,8 +537,11 @@ Cross site iframe are disabled in this application.
if (context.RequestType is not DotvvmRequestType.SpaNavigate)
await context.RejectRequest($"""
Pages can not be loaded using Javascript for security reasons.

Try refreshing the page to get rid of the error.
If you are the developer, you can disable this check by setting DotvvmConfiguration.Security.VerifySecFetchForPages.ExcludeRoute("{route}"). [dest: {dest}, site: {site}]

If you are the developer, you can disable this check by setting DotvvmConfiguration.Security.VerifySecFetchForPages.ExcludeRoute("{route}").
Note that this security check is not compatible with page preloading, such as TurboLinks, Cloudflare Speed Brain, or similar. You'll need to disable one of these. The check is "only" a deference-in-depth measure against XSS and disabling it is perfectly safe in the absence of other vulnerabilities.
""");
if (site != "same-origin")
await context.RejectRequest($"Cross site SPA requests are disabled.");
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