From f42f4b63155ca1f85a69d1313f655caeb9456f1c Mon Sep 17 00:00:00 2001
From: Nick Steele <344821+nicksteele@users.noreply.github.com>
Date: Wed, 21 Feb 2024 20:25:27 +0000
Subject: [PATCH] Merge pull request #2018 from abergs/non-https-loophole

SHA: 3c71812cfb6f2e295e9ea42e2ede9529820784b4
Reason: push, by nicksteele

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 42 +++++++++++++++++++++++++++---------------
 1 file changed, 27 insertions(+), 15 deletions(-)

diff --git a/index.html b/index.html
index 3aa27599a..54b680dab 100644
--- a/index.html
+++ b/index.html
@@ -6,7 +6,7 @@
   <meta content="ED" name="w3c-status">
   <meta content="Bikeshed version d5d58a306, updated Fri Jan 26 16:12:28 2024 -0800" name="generator">
   <link href="https://www.w3.org/TR/webauthn-3/" rel="canonical">
-  <meta content="bfe8f632aa7ee87edd263d2d4cdd2b069c1b7dd5" name="revision">
+  <meta content="3c71812cfb6f2e295e9ea42e2ede9529820784b4" name="revision">
 <style type="text/css">
 body {
     counter-reset: table;
@@ -2330,14 +2330,20 @@ <h2 class="heading settled" data-level="4" id="sctn-terminology"><span class="se
 overridden by the caller, as long as the caller-specified <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑤">RP ID</a> value <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#is-a-registrable-domain-suffix-of-or-is-equal-to" id="ref-for-is-a-registrable-domain-suffix-of-or-is-equal-to①">is a registrable domain suffix of or is equal
 to</a> the caller’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin①">origin</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain①">effective domain</a>. See also <a href="#sctn-createCredential">§ 5.1.3 Create a New Credential - PublicKeyCredential’s [[Create]](origin, options, sameOriginWithAncestors) Method</a> and <a href="#sctn-getAssertion">§ 5.1.4 Use an Existing Credential to Make an Assertion - PublicKeyCredential’s [[Get]](options) Method</a>.</p>
      <div class="note" id="note-pkcredscope" role="note">
-      <a class="self-link" href="#note-pkcredscope"></a> Note: An <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑥">RP ID</a> is based on a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host①">host</a>'s <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain①">domain</a> name. It does not itself include a <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-scheme" id="ref-for-concept-url-scheme①">scheme</a> or <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-port" id="ref-for-concept-url-port①">port</a>, as an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/origin.html#concept-origin" id="ref-for-concept-origin③">origin</a> does. The <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑦">RP ID</a> of a <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential①⑦">public key credential</a> determines its <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="scope">scope</dfn>. I.e., it <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised">determines the set of origins on which the public key credential may be exercised</dfn>, as follows: 
+      <a class="self-link" href="#note-pkcredscope"></a> Note: An <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑥">RP ID</a> is based on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-host" id="ref-for-concept-origin-host">host</a>'s <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain①">domain</a> name. It does not itself include a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-scheme" id="ref-for-concept-origin-scheme">scheme</a> or <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-port" id="ref-for-concept-url-port①">port</a>, as an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/origin.html#concept-origin" id="ref-for-concept-origin③">origin</a> does. The <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑦">RP ID</a> of a <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential①⑦">public key credential</a> determines its <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="scope">scope</dfn>. I.e., it <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised">determines the set of origins on which the public key credential may be exercised</dfn>, as follows: 
       <ul>
        <li data-md>
         <p>The <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑧">RP ID</a> must be equal to the <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised">origin</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain②">effective domain</a>, or a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#is-a-registrable-domain-suffix-of-or-is-equal-to" id="ref-for-is-a-registrable-domain-suffix-of-or-is-equal-to②">registrable domain suffix</a> of the <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised①">origin</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain③">effective domain</a>.</p>
        <li data-md>
-        <p>The <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised②">origin</a>'s <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-scheme" id="ref-for-concept-url-scheme②">scheme</a> must be <code>https</code>.</p>
+        <p>One of the following must be true:</p>
+        <ul>
+         <li data-md>
+          <p>The <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised②">origin</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-scheme" id="ref-for-concept-origin-scheme①">scheme</a> is <code>https</code>.</p>
+         <li data-md>
+          <p>The <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised③">origin</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-host" id="ref-for-concept-origin-host①">host</a> is <code>localhost</code> and its <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-scheme" id="ref-for-concept-origin-scheme②">scheme</a> is <code>http</code>.</p>
+        </ul>
        <li data-md>
-        <p>The <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised③">origin</a>'s <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-port" id="ref-for-concept-url-port②">port</a> is unrestricted.</p>
+        <p>The <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised④">origin</a>'s <a data-link-type="dfn" href="https://url.spec.whatwg.org#concept-url-port" id="ref-for-concept-url-port②">port</a> is unrestricted.</p>
       </ul>
       <p>For example, given a <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party⑦③">Relying Party</a> whose origin is <code>https://login.example.com:1337</code>, then the following <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑨">RP ID</a>s are valid: <code>login.example.com</code> (default) and <code>example.com</code>, but not <code>m.login.example.com</code> and not <code>com</code>.</p>
       <p>This is done in order to match the behavior of pervasively deployed ambient credentials (e.g., cookies, <a data-link-type="biblio" href="#biblio-rfc6265" title="HTTP State Management Mechanism">[RFC6265]</a>).
@@ -2670,9 +2676,9 @@ <h4 class="heading settled" data-level="5.1.3" id="sctn-createCredential"><span
       <p>Let <var>effectiveDomain</var> be the <var>callerOrigin</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain④">effective domain</a>.
 If <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain⑤">effective domain</a> is not a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#valid-domain" id="ref-for-valid-domain①">valid domain</a>, then throw a
 "<code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror">SecurityError</a></code>" <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-DOMException" id="ref-for-idl-DOMException③">DOMException</a></code>.</p>
-      <p class="note" role="note"><span class="marker">Note:</span> An <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain⑥">effective domain</a> may resolve to a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host②">host</a>, which can be represented in various manners,
+      <p class="note" role="note"><span class="marker">Note:</span> An <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain⑥">effective domain</a> may resolve to a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host①">host</a>, which can be represented in various manners,
     such as <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain②">domain</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-ipv4" id="ref-for-concept-ipv4">ipv4 address</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-ipv6" id="ref-for-concept-ipv6">ipv6 address</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#opaque-host" id="ref-for-opaque-host">opaque host</a>, or <a data-link-type="dfn" href="https://url.spec.whatwg.org/#empty-host" id="ref-for-empty-host">empty host</a>.
-    Only the <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain③">domain</a> format of <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host③">host</a> is allowed here. This is for simplification and also
+    Only the <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain③">domain</a> format of <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host②">host</a> is allowed here. This is for simplification and also
     is in recognition of various issues with using direct IP address identification in concert
     with PKI-based security.</p>
      <li id="CreateCred-DetermineRpId">
@@ -3109,9 +3115,9 @@ <h5 class="heading settled" data-level="5.1.4.1" id="sctn-discover-from-external
       <p>Let <var>effectiveDomain</var> be the <var>callerOrigin</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain⑧">effective domain</a>.
 If <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain⑨">effective domain</a> is not a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#valid-domain" id="ref-for-valid-domain②">valid domain</a>, then throw a
 "<code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror②">SecurityError</a></code>" <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-DOMException" id="ref-for-idl-DOMException①⓪">DOMException</a></code>.</p>
-      <p class="note" role="note"><span class="marker">Note:</span> An <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain①⓪">effective domain</a> may resolve to a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host④">host</a>, which can be represented in various manners,
+      <p class="note" role="note"><span class="marker">Note:</span> An <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-effective-domain" id="ref-for-concept-origin-effective-domain①⓪">effective domain</a> may resolve to a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host③">host</a>, which can be represented in various manners,
     such as <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain④">domain</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-ipv4" id="ref-for-concept-ipv4①">ipv4 address</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-ipv6" id="ref-for-concept-ipv6①">ipv6 address</a>, <a data-link-type="dfn" href="https://url.spec.whatwg.org/#opaque-host" id="ref-for-opaque-host①">opaque host</a>, or <a data-link-type="dfn" href="https://url.spec.whatwg.org/#empty-host" id="ref-for-empty-host①">empty host</a>.
-    Only the <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain⑤">domain</a> format of <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host⑤">host</a> is allowed here. This is for simplification and also is
+    Only the <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-domain" id="ref-for-concept-domain⑤">domain</a> format of <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-host" id="ref-for-concept-url-host④">host</a> is allowed here. This is for simplification and also is
     in recognition of various issues with using direct IP address identification in concert with
     PKI-based security.</p>
      <li id="GetAssn-DetermineRpId">
@@ -8706,7 +8712,7 @@ <h4 class="heading settled" data-level="13.4.7" id="sctn-unprotected-account-det
 and thus focus an attack on those likely weaker accounts.</p>
    <p>This issue is similar to the one described in <a href="#sctn-username-enumeration">§ 14.6.2 Username Enumeration</a> and <a href="#sctn-credential-id-privacy-leak">§ 14.6.3 Privacy leak via credential IDs</a>, and can be mitigated in similar ways.</p>
    <h4 class="heading settled" data-level="13.4.8" id="sctn-code-injection"><span class="secno">13.4.8. </span><span class="content">Code injection attacks</span><a class="self-link" href="#sctn-code-injection"></a></h4>
-   <p>Any malicious code executing on an <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised④">origin</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②④">scope</a> of a <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑧⑨">Relying Party</a>'s <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential⑥⑥">public key credentials</a> has the potential to invalidate any and all security guarantees WebAuthn may provide. <a data-link-type="dfn" href="#webauthn-client" id="ref-for-webauthn-client①④">WebAuthn Clients</a> only expose the WebAuthn API in <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context①">secure contexts</a>,
+   <p>Any malicious code executing on an <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑤">origin</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②④">scope</a> of a <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑧⑨">Relying Party</a>'s <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential⑥⑥">public key credentials</a> has the potential to invalidate any and all security guarantees WebAuthn may provide. <a data-link-type="dfn" href="#webauthn-client" id="ref-for-webauthn-client①④">WebAuthn Clients</a> only expose the WebAuthn API in <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context①">secure contexts</a>,
 which mitigates the most basic attacks but SHOULD be combined with additional precautions by <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨⓪">Relying Parties</a>.</p>
    <p>Code injection can happen in several ways;
 this section attempts to point out some likely scenarios and suggest suitable mitigations,
@@ -8715,9 +8721,9 @@ <h4 class="heading settled" data-level="13.4.8" id="sctn-code-injection"><span c
     <li data-md>
      <p>Malicous code could be injected by a third-party script included by the <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨①">Relying Party</a>,
 either intentionally or due to a security vulnerability in the third party.</p>
-     <p>The <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨②">Relying Party</a> therefore SHOULD limit the amount of third-party script included on the <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑤">origins</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑤">scope</a> of its <a data-link-type="dfn" href="https://w3c.github.io/webappsec-credential-management/#concept-credential" id="ref-for-concept-credential②③">credentials</a>.</p>
+     <p>The <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨②">Relying Party</a> therefore SHOULD limit the amount of third-party script included on the <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑥">origins</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑤">scope</a> of its <a data-link-type="dfn" href="https://w3c.github.io/webappsec-credential-management/#concept-credential" id="ref-for-concept-credential②③">credentials</a>.</p>
      <p>The <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨③">Relying Party</a> SHOULD use Content Security Policy <a data-link-type="biblio" href="#biblio-csp2" title="Content Security Policy Level 2">[CSP2]</a>,
-and/or other appropriate technologies available at the time, to limit what script can run on its <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑥">origins</a>.</p>
+and/or other appropriate technologies available at the time, to limit what script can run on its <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑦">origins</a>.</p>
     <li data-md>
      <p>Malicious code could, by the credential <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑥">scope</a> rules, be hosted on a subdomain of the <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑤⓪">RP ID</a>.
 For example, user-submitted code hosted on <code>usercontent.example.org</code> could exercise any <a data-link-type="dfn" href="https://w3c.github.io/webappsec-credential-management/#concept-credential" id="ref-for-concept-credential②④">credentials</a> <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑦">scoped</a> to the <a data-link-type="dfn" href="#rp-id" id="ref-for-rp-id⑤①">RP ID</a> <code>example.org</code>.
@@ -8725,7 +8731,7 @@ <h4 class="heading settled" data-level="13.4.8" id="sctn-code-injection"><span c
 malicious users could use this to launch a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc4949#page-186" id="ref-for-page-186⑦">man-in-the-middle attack</a> to obtain valid <a data-link-type="dfn" href="#authentication-assertion" id="ref-for-authentication-assertion①⑦">authentication assertions</a> and impersonate the victims of the attack.</p>
      <p>Therefore, the <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨⑤">Relying Party</a> by default SHOULD NOT allow a subdomain <code class="idl"><a data-link-type="idl" href="#dom-collectedclientdata-origin" id="ref-for-dom-collectedclientdata-origin①⓪">origin</a></code> when <a href="#rp-op-verifying-assertion-step-origin">verifying the assertion</a>.
 If the <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨⑥">Relying Party</a> needs to allow a subdomain <code class="idl"><a data-link-type="idl" href="#dom-collectedclientdata-origin" id="ref-for-dom-collectedclientdata-origin①①">origin</a></code>,
-then the <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨⑦">Relying Party</a> MUST NOT serve untrusted code on any allowed subdomain of <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑦">origins</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑧">scope</a> of its <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential⑥⑦">public key credentials</a>.</p>
+then the <a data-link-type="dfn" href="#relying-party" id="ref-for-relying-party③⑨⑦">Relying Party</a> MUST NOT serve untrusted code on any allowed subdomain of <a data-link-type="dfn" href="#determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised" id="ref-for-determines-the-set-of-origins-on-which-the-public-key-credential-may-be-exercised⑧">origins</a> within the <a data-link-type="dfn" href="#scope" id="ref-for-scope②⑧">scope</a> of its <a data-link-type="dfn" href="#public-key-credential" id="ref-for-public-key-credential⑥⑦">public key credentials</a>.</p>
    </ul>
    <h4 class="heading settled" data-level="13.4.9" id="sctn-validating-origin"><span class="secno">13.4.9. </span><span class="content">Validating the origin of a credential</span><a class="self-link" href="#sctn-validating-origin"></a></h4>
    <p>When <a href="#rp-op-registering-a-new-credential-step-origin">registering a credential</a> and
@@ -9862,6 +9868,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="8c1e3a13">effective domain</span>
      <li><span class="dfn-paneled" id="3e12e042">environment settings object</span>
      <li><span class="dfn-paneled" id="8a30477b">global object</span>
+     <li><span class="dfn-paneled" id="77a2ee6e">host</span>
      <li><span class="dfn-paneled" id="87fcd40c">iframe</span>
      <li><span class="dfn-paneled" id="a72449dd">in parallel</span>
      <li><span class="dfn-paneled" id="d7d642a2">input</span>
@@ -9875,6 +9882,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="e99bd18e">relevant global object</span>
      <li><span class="dfn-paneled" id="9c4c1e66">relevant settings object</span>
      <li><span class="dfn-paneled" id="feac4ab3">same site</span>
+     <li><span class="dfn-paneled" id="a23d12a9">scheme</span>
      <li><span class="dfn-paneled" id="65181da8">secure context</span>
      <li><span class="dfn-paneled" id="fc736137">textarea</span>
      <li><span class="dfn-paneled" id="c63519ed">top-level origin</span>
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