[release/8.0] Forwarded Headers Middleware: Ignore XForwardedHeaders from Unknown Proxy #61623
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April 22, 2025 22:32
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Hi @@github-actions[bot]. This PR was just approved to be included in the upcoming servicing release. Somebody from the @dotnet/aspnet-build team will get it merged when the branches are open. Until then, please make sure all the CI checks pass and the PR is reviewed. |
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Backport of #61530 to release/8.0
/cc @BrennanConroy @yannic-hamann-abb
Forwarded Headers Middleware: Ignore XForwardedHeaders from Unknown Proxy
Description
If the
ForwardedHeadersMiddlewaremiddleware is used without usingXForwardedForthen theKnownNetworksandKnownProxieschecks are skipped.Fixes #61449
Customer Impact
Expectations for
KnownNetworksandKnownProxiessettings are not always met. If you aren't careful with configuring your app (careful meaning aware of this issue), you can end up allowing traffic you didn't intend to allow.Regression?
Risk
Runs a check that was already there but runs it in more cases.
Verification
Packaging changes reviewed?