diff --git a/app/src/helpers/commons.js b/app/src/helpers/commons.js
index 768e62c1..7a94f386 100644
--- a/app/src/helpers/commons.js
+++ b/app/src/helpers/commons.js
@@ -103,6 +103,28 @@ export function arrayDiff (arr1 = [], arr2 = []) {
 }
 
 
+/**
+ * Returns a new string with escaped HTML (`&<>"'` replaced by entities).
+ *
+ * @param {String} unsafe
+ * @return {String}
+ */
+export function escapeHtml (unsafe) {
+  return unsafe
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#039;')
+}
+
+/**
+ * Returns a random integer between `min` and `max`.
+ *
+ * @param {Number} min
+ * @param {Number} max
+ * @return {Number}
+ */
 export function randint (min, max) {
   return Math.floor(Math.random() * (max - min + 1)) + min
 }
diff --git a/app/src/views/tool/ToolLog.vue b/app/src/views/tool/ToolLog.vue
index 0403c58b..05bf1bee 100644
--- a/app/src/views/tool/ToolLog.vue
+++ b/app/src/views/tool/ToolLog.vue
@@ -31,7 +31,7 @@
     </card>
 
     <div v-if="info.error" class="alert alert-danger my-5">
-      <icon iname="exclamation-circle" /> {{ $t('operation_failed_explanation') }}
+      <icon iname="exclamation-circle" /> <span v-html="$t('operation_failed_explanation')" />
     </div>
 
     <!-- LOGS CARD -->
@@ -45,7 +45,7 @@
       <b-button
         v-if="moreLogsAvailable"
         variant="white" class="w-100 rounded-0"
-        @click="$ref.view.fetchQueries()"
+        @click="$refs.view.fetchQueries()"
       >
         <icon iname="plus" /> {{ $t('logs_more') }}
       </b-button>
@@ -61,7 +61,7 @@
 
 <script>
 import api from '@/api'
-import { objectToParams } from '@/helpers/commons'
+import { objectToParams, escapeHtml } from '@/helpers/commons'
 import { readableDate } from '@/helpers/filters/date'
 
 export default {
@@ -107,14 +107,15 @@ export default {
 
       const levels = ['ERROR', 'WARNING', 'SUCCESS', 'INFO']
       this.logs = log.logs.map(line => {
+        const escaped = escapeHtml(line)
         for (const level of levels) {
           if (line.includes(level + ' -')) {
             return `<span class="alert-${level === 'ERROR'
               ? 'danger'
-              : level.toLowerCase()}">${line}</span>`
+              : level.toLowerCase()}">${escaped}</span>`
           }
         }
-        return line
+        return escaped
       }).join('\n')
       // eslint-disable-next-line
       const { started_at, ended_at, error, success, suboperations } = log.metadata