diff --git a/browser/base/content/pageinfo/permissions.js b/browser/base/content/pageinfo/permissions.js
index 55a67a99365b..c997fdc2b4d1 100644
--- a/browser/base/content/pageinfo/permissions.js
+++ b/browser/base/content/pageinfo/permissions.js
@@ -30,7 +30,7 @@ var permissionObserver = {
 
 function onLoadPermission()
 {
-  var uri = gDocument.documentURIObject;
+  var uri = BrowserUtils.makeURIFromCPOW(gDocument.documentURIObject);
   var permTab = document.getElementById("permTab");
   if (SitePermissions.isSupportedURI(uri)) {
     gPermURI = uri;
diff --git a/browser/base/content/pageinfo/security.js b/browser/base/content/pageinfo/security.js
index e2c16300a4ac..f3f166b62934 100644
--- a/browser/base/content/pageinfo/security.js
+++ b/browser/base/content/pageinfo/security.js
@@ -3,6 +3,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+Components.utils.import("resource://gre/modules/BrowserUtils.jsm");
+
 var security = {
   // Display the server certificate (static)
   viewCert : function () {
@@ -135,7 +137,7 @@ var security = {
                       getService(Components.interfaces.nsIEffectiveTLDService);
 
     var eTLD;
-    var uri = gDocument.documentURIObject;
+    var uri = BrowserUtils.makeURIFromCPOW(gDocument.documentURIObject);
     try {
       eTLD = eTLDService.getBaseDomain(uri);
     }
@@ -232,7 +234,7 @@ function securityOnLoad() {
   var yesStr = pageInfoBundle.getString("yes");
   var noStr = pageInfoBundle.getString("no");
 
-  var uri = gDocument.documentURIObject;
+  var uri = BrowserUtils.makeURIFromCPOW(gDocument.documentURIObject);
   setText("security-privacy-cookies-value",
           hostHasCookies(uri) ? yesStr : noStr);
   setText("security-privacy-passwords-value",
diff --git a/browser/base/content/test/general/browser.ini b/browser/base/content/test/general/browser.ini
index 2ebf011c4b9d..e6a2923c3d1e 100644
--- a/browser/base/content/test/general/browser.ini
+++ b/browser/base/content/test/general/browser.ini
@@ -174,7 +174,6 @@ skip-if = buildapp == 'mulet' || e10s # Bug 1099156 - test directly manipulates
 skip-if = buildapp == 'mulet'
 [browser_bug455852.js]
 [browser_bug460146.js]
-skip-if = e10s # Bug 866413 - PageInfo doesn't work in e10s
 [browser_bug462289.js]
 skip-if = toolkit == "cocoa" || e10s # Bug 1102017 - middle-button mousedown on selected tab2 does not activate tab - Didn't expect [object XULElement], but got it
 [browser_bug462673.js]
@@ -187,7 +186,6 @@ skip-if = buildapp == 'mulet'
 skip-if = buildapp == 'mulet'
 [browser_bug495058.js]
 [browser_bug517902.js]
-skip-if = e10s # Bug 866413 - PageInfo doesn't work in e10s
 [browser_bug519216.js]
 [browser_bug520538.js]
 [browser_bug521216.js]
@@ -335,7 +333,7 @@ skip-if = buildapp == 'mulet' || e10s # Bug 1100662 - content access causing unc
 skip-if = buildapp == 'mulet' || e10s # Bug 1093603 - test breaks with PopupNotifications.panel.firstElementChild is null
 [browser_overflowScroll.js]
 [browser_pageInfo.js]
-skip-if = buildapp == 'mulet' || e10s # Bug 866413 - PageInfo doesn't work in e10s
+skip-if = buildapp == 'mulet'
 [browser_page_style_menu.js]
 
 [browser_parsable_css.js]
diff --git a/browser/base/content/test/plugins/browser.ini b/browser/base/content/test/plugins/browser.ini
index b28dec5edfff..e043681f6a73 100644
--- a/browser/base/content/test/plugins/browser.ini
+++ b/browser/base/content/test/plugins/browser.ini
@@ -79,7 +79,6 @@ skip-if = !crashreporter
 [browser_pluginCrashCommentAndURL.js]
 skip-if = !crashreporter
 [browser_pageInfo_plugins.js]
-skip-if = e10s # Bug 866413
 [browser_pluginplaypreview.js]
 skip-if = e10s # bug 1148827
 [browser_pluginplaypreview2.js]
diff --git a/browser/modules/Feeds.jsm b/browser/modules/Feeds.jsm
index f3977ee5ee1c..e9fcedf44cfb 100644
--- a/browser/modules/Feeds.jsm
+++ b/browser/modules/Feeds.jsm
@@ -7,6 +7,7 @@
 this.EXPORTED_SYMBOLS = [ "Feeds" ];
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
                                   "resource://gre/modules/BrowserUtils.jsm");
@@ -37,8 +38,11 @@ this.Feeds = {
     }
 
     if (aIsFeed) {
+      // re-create the principal as it may be a CPOW.
+      let principalURI = BrowserUtils.makeURIFromCPOW(aPrincipal.URI);
+      let principalToCheck = Services.scriptSecurityManager.getNoAppCodebasePrincipal(principalURI);
       try {
-        BrowserUtils.urlSecurityCheck(aLink.href, aPrincipal,
+        BrowserUtils.urlSecurityCheck(aLink.href, principalToCheck,
                                       Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
         return type || "application/rss+xml";
       }