Change signature verification to ignore signatures with invalid host (#13033)

Instead of returning a signature verification error, pretend there
was no signature (i.e., this does not allow access to resources that
need a valid signature), so public resources can still be fetched

Fix #13011

1 files changed, 2 insertions, 0 deletions

diff --git a/app/controllers/concerns/signature_verification.rb b/app/controllers/concerns/signature_verification.rb
index ce353f1de..10efbf2e0 100644
--- a/app/controllers/concerns/signature_verification.rb
+++ b/app/controllers/concerns/signature_verification.rb
@@ -160,6 +160,8 @@ module SignatureVerification
       account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false) }
       account
     end
+  rescue Mastodon::HostValidationError
+    nil
   end
 
   def stoplight_wrap_request(&block)