diff --git a/sphinx/themes/agogo/layout.html b/sphinx/themes/agogo/layout.html
index aca2e1e3376..26c37b10ea5 100644
--- a/sphinx/themes/agogo/layout.html
+++ b/sphinx/themes/agogo/layout.html
@@ -15,7 +15,7 @@
       <div class="header">
         {%- if logo %}
           <p class="logo"><a href="{{ pathto(master_doc)|e }}">
-            <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+            <img class="logo" src="{{ pathto('_static/' + logo, 1)|e }}" alt="Logo"/>
           </a></p>
         {%- endif %}
         {%- block headertitle %}
@@ -24,7 +24,7 @@
         {%- endblock %}
         <div class="rel" role="navigation" aria-label="related navigation">
           {%- for rellink in rellinks|reverse %}
-          <a href="{{ pathto(rellink[0]) }}" title="{{ rellink[1]|striptags|e }}"
+          <a href="{{ pathto(rellink[0])|e }}" title="{{ rellink[1]|striptags|e }}"
              {{ accesskey(rellink[2]) }}>{{ rellink[3] }}</a>
           {%- if not loop.last %}{{ reldelim2 }}{% endif %}
           {%- endfor %}
@@ -78,7 +78,7 @@ <h3 style="margin-top: 1.5em;">{{ _('Search') }}</h3>
         <div class="left">
           <div role="navigation" aria-label="related navigaton">
             {%- for rellink in rellinks|reverse %}
-            <a href="{{ pathto(rellink[0]) }}" title="{{ rellink[1]|striptags|e }}"
+            <a href="{{ pathto(rellink[0])|e }}" title="{{ rellink[1]|striptags|e }}"
               {{ accesskey(rellink[2]) }}>{{ rellink[3] }}</a>
             {%- if not loop.last %}{{ reldelim2 }}{% endif %}
             {%- endfor %}
diff --git a/sphinx/themes/basic/domainindex.html b/sphinx/themes/basic/domainindex.html
index 931435f49ed..f4f74233873 100644
--- a/sphinx/themes/basic/domainindex.html
+++ b/sphinx/themes/basic/domainindex.html
@@ -43,7 +43,7 @@ <h1>{{ indextitle }}</h1>
               id="toggle-{{ groupid.next() }}" style="display: none" alt="-" />
            {%- endif %}</td>
        <td>{% if grouptype == 2 %}&#160;&#160;&#160;{% endif %}
-       {% if page %}<a href="{{ pathto(page) }}#{{ anchor }}">{% endif -%}
+       {% if page %}<a href="{{ pathto(page)|e }}#{{ anchor }}">{% endif -%}
        <code class="xref">{{ name|e }}</code>
        {%- if page %}</a>{% endif %}
      {%- if extra %} <em>({{ extra|e }})</em>{% endif -%}
diff --git a/sphinx/themes/basic/layout.html b/sphinx/themes/basic/layout.html
index 812420eafe2..1da2291df80 100644
--- a/sphinx/themes/basic/layout.html
+++ b/sphinx/themes/basic/layout.html
@@ -32,7 +32,7 @@ <h3>{{ _('Navigation') }}</h3>
       <ul>
         {%- for rellink in rellinks %}
         <li class="right" {% if loop.first %}style="margin-right: 10px"{% endif %}>
-          <a href="{{ pathto(rellink[0]) }}" title="{{ rellink[1]|striptags|e }}"
+          <a href="{{ pathto(rellink[0])|e }}" title="{{ rellink[1]|striptags|e }}"
              {{ accesskey(rellink[2]) }}>{{ rellink[3] }}</a>
           {%- if not loop.first %}{{ reldelim2 }}{% endif %}</li>
         {%- endfor %}
@@ -54,7 +54,7 @@ <h3>{{ _('Navigation') }}</h3>
           {%- block sidebarlogo %}
           {%- if logo %}
             <p class="logo"><a href="{{ pathto(master_doc)|e }}">
-              <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+              <img class="logo" src="{{ pathto('_static/' + logo, 1)|e }}" alt="Logo"/>
             </a></p>
           {%- endif %}
           {%- endblock %}
@@ -94,13 +94,13 @@ <h3>{{ _('Navigation') }}</h3>
 {%- endmacro %}
 
 {%- macro css() %}
-    <link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}" type="text/css" />
+    <link rel="stylesheet" href="{{ pathto('_static/' + style, 1)|e }}" type="text/css" />
     <link rel="stylesheet" href="{{ pathto('_static/pygments.css', 1) }}" type="text/css" />
     {%- for css in css_files %}
       {%- if css|attr("filename") %}
     {{ css_tag(css) }}
       {%- else %}
-    <link rel="stylesheet" href="{{ pathto(css, 1) }}" type="text/css" />
+    <link rel="stylesheet" href="{{ pathto(css, 1)|e }}" type="text/css" />
       {%- endif %}
     {%- endfor %}
 {%- endmacro %}
@@ -139,7 +139,7 @@ <h3>{{ _('Navigation') }}</h3>
           href="{{ pathto('_static/opensearch.xml', 1) }}"/>
     {%- endif %}
     {%- if favicon %}
-    <link rel="shortcut icon" href="{{ pathto('_static/' + favicon, 1) }}"/>
+    <link rel="shortcut icon" href="{{ pathto('_static/' + favicon, 1)|e }}"/>
     {%- endif %}
     {%- endif %}
 {%- block linktags %}
diff --git a/sphinx/themes/basic/opensearch.xml b/sphinx/themes/basic/opensearch.xml
index bac08b4a24c..0cad2967ca7 100644
--- a/sphinx/themes/basic/opensearch.xml
+++ b/sphinx/themes/basic/opensearch.xml
@@ -7,7 +7,7 @@
        template="{{ use_opensearch }}/{{ pathto('search') }}?q={searchTerms}"/>
   <LongName>{{ docstitle|e }}</LongName>
 {%- if favicon %}
-  <Image height="16" width="16" type="image/x-icon">{{ use_opensearch }}/{{ pathto('_static/' + favicon, 1) }}</Image>
+  <Image height="16" width="16" type="image/x-icon">{{ use_opensearch }}/{{ pathto('_static/' + favicon, 1)|e }}</Image>
 {%- endif %}
 {% block extra %} {# Put e.g. an <Image> element here. #} {% endblock %}
 </OpenSearchDescription>
diff --git a/sphinx/themes/haiku/layout.html b/sphinx/themes/haiku/layout.html
index f833cf50927..c47b8eccc1c 100644
--- a/sphinx/themes/haiku/layout.html
+++ b/sphinx/themes/haiku/layout.html
@@ -36,11 +36,11 @@
         {%- block haikuheader %}
         {%- if theme_full_logo != "false" %}
         <a href="{{ pathto('index') }}">
-          <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+          <img class="logo" src="{{ pathto('_static/' + logo, 1)|e }}" alt="Logo"/>
         </a>
         {%- else %}
         {%- if logo -%}
-          <img class="rightlogo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+          <img class="rightlogo" src="{{ pathto('_static/' + logo, 1)|e }}" alt="Logo"/>
         {%- endif -%}
         <h1 class="heading"><a href="{{ pathto('index') }}">
           <span>{{ shorttitle|e }}</span></a></h1>
diff --git a/sphinx/themes/pyramid/layout.html b/sphinx/themes/pyramid/layout.html
index f1d3984dc4a..02eec1cfb14 100644
--- a/sphinx/themes/pyramid/layout.html
+++ b/sphinx/themes/pyramid/layout.html
@@ -13,7 +13,7 @@
 <div class="header" role="banner">
   <div class="logo">
     <a href="{{ pathto(master_doc)|e }}">
-      <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+      <img class="logo" src="{{ pathto('_static/' + logo, 1)|e }}" alt="Logo"/>
     </a>
   </div>
 </div>
diff --git a/sphinx/themes/scrolls/layout.html b/sphinx/themes/scrolls/layout.html
index 7474f6f31c1..7866a516205 100644
--- a/sphinx/themes/scrolls/layout.html
+++ b/sphinx/themes/scrolls/layout.html
@@ -30,7 +30,7 @@ <h1 class="heading"><a href="{{ pathto('index') }}"
         {%- if prev %}
         <a href="{{ prev.link|e }}">&laquo; {{ prev.title }}</a> |
         {%- endif %}
-        <a href="{{ pathto(current_page_name) if current_page_name else '#' }}">{{ title }}</a>
+        <a href="{{ pathto(current_page_name)|e if current_page_name else '#' }}">{{ title }}</a>
         {%- if next %}
         | <a href="{{ next.link|e }}">{{ next.title }} &raquo;</a>
         {%- endif %}