diff --git a/changelog/20235.txt b/changelog/20235.txt
new file mode 100644
index 000000000..d1b9f8a6e
--- /dev/null
+++ b/changelog/20235.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+ui: remove use of htmlSafe except when first sanitized
+```
diff --git a/ui/app/components/diff-version-selector.js b/ui/app/components/diff-version-selector.js
index 8daed6d32..dd0069fb7 100644
--- a/ui/app/components/diff-version-selector.js
+++ b/ui/app/components/diff-version-selector.js
@@ -8,7 +8,6 @@ import Component from '@glimmer/component';
 import { inject as service } from '@ember/service';
 import { action } from '@ember/object';
 import { tracked } from '@glimmer/tracking';
-import { htmlSafe } from '@ember/template';
 
 /**
  * @module DiffVersionSelector
@@ -64,10 +63,10 @@ export default class DiffVersionSelector extends Component {
     if (delta === undefined) {
       this.statesMatch = true;
       // params: value, replacer (all properties included), space (white space and indentation, line break, etc.)
-      this.visualDiff = htmlSafe(JSON.stringify(leftSideVersionData, undefined, 2));
+      this.visualDiff = JSON.stringify(leftSideVersionData, undefined, 2);
     } else {
       this.statesMatch = false;
-      this.visualDiff = htmlSafe(jsondiffpatch.formatters.html.format(delta, rightSideVersionData));
+      this.visualDiff = jsondiffpatch.formatters.html.format(delta, rightSideVersionData);
     }
   }
 
diff --git a/ui/app/components/wizard-content.js b/ui/app/components/wizard-content.js
index 40615ed05..8cee2e9bf 100644
--- a/ui/app/components/wizard-content.js
+++ b/ui/app/components/wizard-content.js
@@ -8,7 +8,6 @@ import { inject as service } from '@ember/service';
 import Component from '@ember/component';
 import { computed } from '@ember/object';
 import { FEATURE_MACHINE_STEPS, INIT_STEPS } from 'vault/helpers/wizard-constants';
-import { htmlSafe } from '@ember/template';
 
 export default Component.extend({
   wizard: service(),
@@ -89,25 +88,25 @@ export default Component.extend({
       const bar = [];
       if (this.currentTutorialProgress) {
         bar.push({
-          style: htmlSafe(`width:${this.currentTutorialProgress.percentage}%;`),
+          style: `width:${this.currentTutorialProgress.percentage}%;`,
           completed: false,
           showIcon: true,
         });
       } else {
         if (this.currentFeatureProgress) {
           this.completedFeatures.forEach((feature) => {
-            bar.push({ style: htmlSafe('width:100%;'), completed: true, feature: feature, showIcon: true });
+            bar.push({ style: 'width:100%;', completed: true, feature: feature, showIcon: true });
           });
           this.wizard.featureList.forEach((feature) => {
             if (feature === this.currentMachine) {
               bar.push({
-                style: htmlSafe(`width:${this.currentFeatureProgress.percentage}%;`),
+                style: `width:${this.currentFeatureProgress.percentage}%;`,
                 completed: this.currentFeatureProgress.percentage == 100 ? true : false,
                 feature: feature,
                 showIcon: true,
               });
             } else {
-              bar.push({ style: htmlSafe('width:0%;'), completed: false, feature: feature, showIcon: true });
+              bar.push({ style: 'width:0%;', completed: false, feature: feature, showIcon: true });
             }
           });
         }
diff --git a/ui/app/components/wizard/features-selection.js b/ui/app/components/wizard/features-selection.js
index 944b1d9c7..a14e99318 100644
--- a/ui/app/components/wizard/features-selection.js
+++ b/ui/app/components/wizard/features-selection.js
@@ -8,7 +8,6 @@ import { inject as service } from '@ember/service';
 import Component from '@ember/component';
 import { computed } from '@ember/object';
 import { FEATURE_MACHINE_TIME } from 'vault/helpers/wizard-constants';
-import { htmlSafe } from '@ember/template';
 
 export default Component.extend({
   wizard: service(),
@@ -55,10 +54,10 @@ export default Component.extend({
   }),
   selectProgress: computed('selectedFeatures', function () {
     let bar = this.selectedFeatures.map((feature) => {
-      return { style: htmlSafe('width:0%;'), completed: false, showIcon: true, feature: feature };
+      return { style: 'width:0%;', completed: false, showIcon: true, feature: feature };
     });
     if (bar.length === 0) {
-      bar = [{ style: htmlSafe('width:0%;'), showIcon: false }];
+      bar = [{ style: 'width:0%;', showIcon: false }];
     }
     return bar;
   }),
diff --git a/ui/app/templates/components/diff-version-selector.hbs b/ui/app/templates/components/diff-version-selector.hbs
index 6ac766ff8..9114f3886 100644
--- a/ui/app/templates/components/diff-version-selector.hbs
+++ b/ui/app/templates/components/diff-version-selector.hbs
@@ -98,5 +98,5 @@
 </Toolbar>
 
 <div class="form-section visual-diff">
-  <pre>{{this.visualDiff}}</pre>
+  <pre>{{sanitized-html this.visualDiff}}</pre>
 </div>
\ No newline at end of file
diff --git a/ui/app/templates/components/wizard-progress.hbs b/ui/app/templates/components/wizard-progress.hbs
index 6bae1819f..29899c5db 100644
--- a/ui/app/templates/components/wizard-progress.hbs
+++ b/ui/app/templates/components/wizard-progress.hbs
@@ -2,7 +2,7 @@
   {{#each @progressBar as |bar|}}
     <div class="feature-progress-container">
       <span class="progress-bar">
-        <span class="feature-progress" style={{bar.style}} {{! template-lint-disable }}></span>
+        <span class="feature-progress" style={{sanitized-html bar.style}}></span>
       </span>
       {{#if bar.showIcon}}
         <Icon @name="check-circle-fill" class="feature-check {{if bar.completed 'completed-check' 'incomplete-check'}}" />
diff --git a/ui/lib/core/addon/components/confirm.js b/ui/lib/core/addon/components/confirm.js
index a287b78af..f7511ce42 100644
--- a/ui/lib/core/addon/components/confirm.js
+++ b/ui/lib/core/addon/components/confirm.js
@@ -5,7 +5,6 @@
 
 import Component from '@ember/component';
 import { computed } from '@ember/object';
-import { htmlSafe } from '@ember/template';
 import layout from '../templates/components/confirm';
 import { next } from '@ember/runloop';
 
@@ -34,7 +33,7 @@ export default Component.extend({
   height: 0,
   focusTrigger: null,
   style: computed('height', function () {
-    return htmlSafe(`height: ${this.height}px`);
+    return `height: ${this.height}px`;
   }),
   wormholeReference: null,
   wormholeId: computed('elementId', function () {
diff --git a/ui/lib/core/addon/components/replication-dashboard.js b/ui/lib/core/addon/components/replication-dashboard.js
index ff9e5e8d3..1993c6d57 100644
--- a/ui/lib/core/addon/components/replication-dashboard.js
+++ b/ui/lib/core/addon/components/replication-dashboard.js
@@ -7,7 +7,6 @@ import Component from '@ember/component';
 import { computed } from '@ember/object';
 import { clusterStates } from 'core/helpers/cluster-states';
 import { capitalize } from '@ember/string';
-import { htmlSafe } from '@ember/template';
 import layout from '../templates/components/replication-dashboard';
 
 /**
@@ -35,7 +34,7 @@ import layout from '../templates/components/replication-dashboard';
  * @param {Boolean} [isSummaryDashboard=false] -  Only true when the cluster is both a dr and performance primary. If true, replicationDetailsSummary is populated and used to pass through the cluster details.
  * @param {Object} replicationDetailsSummary=null - An Ember data object computed off the Ember Model.  It combines the Model.dr and Model.performance objects into one and contains details specific to the mode replication.
  * @param {Object} replicationDetails=null - An Ember data object pulled from the Ember Model. It contains details specific to the whether the replication is dr or performance.
- * @param {String} clusterMode=null - The cluster mode passed through to a table component. 
+ * @param {String} clusterMode=null - The cluster mode passed through to a table component.
  * @param {Object} reindexingDetails=null - An Ember data object used to show a reindexing progress bar.
  */
 
@@ -94,9 +93,7 @@ export default Component.extend({
   }),
   reindexMessage: computed('isSecondary', 'progressBar', function () {
     if (!this.isSecondary) {
-      return htmlSafe(
-        'This can cause a delay depending on the size of the data store. You can <b>not</b> use Vault during this time.'
-      );
+      return 'This can cause a delay depending on the size of the data store. You can <b>not</b> use Vault during this time.';
     }
     return 'This can cause a delay depending on the size of the data store. You can use Vault during this time.';
   }),
diff --git a/ui/lib/core/addon/helpers/sanitized-html.js b/ui/lib/core/addon/helpers/sanitized-html.js
new file mode 100644
index 000000000..cfa99d723
--- /dev/null
+++ b/ui/lib/core/addon/helpers/sanitized-html.js
@@ -0,0 +1,14 @@
+import { helper } from '@ember/component/helper';
+import { debug } from '@ember/debug';
+import { htmlSafe } from '@ember/template';
+import { sanitize } from 'dompurify';
+
+export default helper(function sanitizedHtml([htmlString]) {
+  try {
+    return htmlSafe(sanitize(htmlString));
+  } catch (e) {
+    debug('Error sanitizing string', e);
+    // I couldn't get this to actually fail but as a fallback render the value as-is
+    return htmlString;
+  }
+});
diff --git a/ui/lib/core/addon/templates/components/replication-dashboard.hbs b/ui/lib/core/addon/templates/components/replication-dashboard.hbs
index 834619b09..8e0aaef58 100644
--- a/ui/lib/core/addon/templates/components/replication-dashboard.hbs
+++ b/ui/lib/core/addon/templates/components/replication-dashboard.hbs
@@ -5,7 +5,7 @@
         @title={{concat "Re-indexing in progress" this.reindexingStage}}
         @type="info"
         @progressBar={{this.progressBar}}
-        @message={{this.reindexMessage}}
+        @message={{sanitized-html this.reindexMessage}}
         data-test-isReindexing
       />
     </div>
diff --git a/ui/lib/core/app/helpers/sanitized-html.js b/ui/lib/core/app/helpers/sanitized-html.js
new file mode 100644
index 000000000..7bd6cb8d9
--- /dev/null
+++ b/ui/lib/core/app/helpers/sanitized-html.js
@@ -0,0 +1 @@
+export { default } from 'core/helpers/sanitized-html';
diff --git a/ui/lib/core/package.json b/ui/lib/core/package.json
index b4326d2e2..3fcb0c734 100644
--- a/ui/lib/core/package.json
+++ b/ui/lib/core/package.json
@@ -8,6 +8,7 @@
     "date-fns": "*",
     "@icholy/duration": "*",
     "base64-js": "*",
+    "dompurify": "*",
     "ember-auto-import": "*",
     "ember-basic-dropdown": "*",
     "ember-cli-babel": "*",
diff --git a/ui/lib/kubernetes/addon/components/page/role/create-and-edit.hbs b/ui/lib/kubernetes/addon/components/page/role/create-and-edit.hbs
index ac2780d6b..fad90586b 100644
--- a/ui/lib/kubernetes/addon/components/page/role/create-and-edit.hbs
+++ b/ui/lib/kubernetes/addon/components/page/role/create-and-edit.hbs
@@ -109,7 +109,7 @@
             @value={{template.rules}}
             @mode="ruby"
             @valueUpdated={{fn (mut template.rules)}}
-            @helpText={{this.roleRulesHelpText}}
+            @helpText={{sanitized-html this.roleRulesHelpText}}
           >
             <button type="button" class="toolbar-link" {{on "click" this.resetRoleRules}} data-test-restore-example>
               Restore example
diff --git a/ui/lib/kubernetes/addon/components/page/role/create-and-edit.js b/ui/lib/kubernetes/addon/components/page/role/create-and-edit.js
index f279637e7..c70792eb1 100644
--- a/ui/lib/kubernetes/addon/components/page/role/create-and-edit.js
+++ b/ui/lib/kubernetes/addon/components/page/role/create-and-edit.js
@@ -10,7 +10,6 @@ import { action } from '@ember/object';
 import { task } from 'ember-concurrency';
 import { waitFor } from '@ember/test-waiters';
 import { getRules } from '../../../utils/generated-role-rules';
-import { htmlSafe } from '@ember/template';
 import errorMessage from 'vault/utils/error-message';
 
 /**
@@ -87,7 +86,7 @@ export default class CreateAndEditRolePageComponent extends Component {
       'This specifies the Role or ClusterRole rules to use when generating a role. Kubernetes documentation is';
     const link =
       '<a href="https://kubernetes.io/docs/reference/access-authn-authz/rbac/" target="_blank" rel="noopener noreferrer">available here</>';
-    return htmlSafe(`${message} ${link}.`);
+    return `${message} ${link}.`;
   }
 
   @action
diff --git a/ui/package.json b/ui/package.json
index e52812d44..ba7a1fdc7 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -117,6 +117,7 @@
     "date-fns-tz": "^1.2.2",
     "deepmerge": "^4.0.0",
     "doctoc": "^2.2.0",
+    "dompurify": "^3.0.2",
     "ember-auto-import": "2.4.2",
     "ember-basic-dropdown": "6.0.1",
     "ember-cli": "~4.4.0",
diff --git a/ui/tests/integration/helpers/sanitized-html-test.js b/ui/tests/integration/helpers/sanitized-html-test.js
new file mode 100644
index 000000000..917964b51
--- /dev/null
+++ b/ui/tests/integration/helpers/sanitized-html-test.js
@@ -0,0 +1,35 @@
+import { module, test } from 'qunit';
+import { setupRenderingTest } from 'vault/tests/helpers';
+import { render } from '@ember/test-helpers';
+import { hbs } from 'ember-cli-htmlbars';
+
+module('Integration | Helper | sanitized-html', function (hooks) {
+  setupRenderingTest(hooks);
+
+  test('it does not alter if string is safe', async function (assert) {
+    this.set('inputValue', 'height: 15.33px');
+
+    await render(hbs`{{sanitized-html this.inputValue}}`);
+    assert.dom(this.element).hasText('height: 15.33px');
+  });
+
+  test('it strips unsafe HTML before rendering safe HTML', async function (assert) {
+    this.set(
+      'inputValue',
+      '<main data-test-thing>This is something<script data-test-script>window.alert(`h4cK3d`)</script></main>'
+    );
+
+    await render(hbs`{{sanitized-html this.inputValue}}`);
+    assert.dom('[data-test-thing]').hasTagName('main');
+    assert.dom('[data-test-thing]').hasText('This is something', 'preserves non-problematic content');
+    assert.dom('[data-test-script]').doesNotExist('Script is stripped from render');
+  });
+
+  test('it does not invoke functions passed as value', async function (assert) {
+    this.set('inputValue', () => {
+      window.alert('h4cK3d');
+    });
+    await render(hbs`{{sanitized-html this.inputValue}}`);
+    assert.dom(this.element).hasText("() => { window.alert('h4cK3d'); }");
+  });
+});
diff --git a/ui/yarn.lock b/ui/yarn.lock
index 8390944d2..4ef4ac95c 100644
--- a/ui/yarn.lock
+++ b/ui/yarn.lock
@@ -8813,6 +8813,11 @@ domhandler@^5.0.1, domhandler@^5.0.2, domhandler@^5.0.3:
   dependencies:
     domelementtype "^2.3.0"
 
+dompurify@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-3.0.2.tgz#bc4c7c011c825e7704341a285461d8d407d9429a"
+  integrity sha512-B8c6JdiEpxAKnd8Dm++QQxJL4lfuc757scZtcapj6qjTjrQzyq5iAyznLKVvK+77eYNiFblHBlt7MM0fOeqoKw==
+
 domutils@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/domutils/-/domutils-1.7.0.tgz#56ea341e834e06e6748af7a1cb25da67ea9f8c2a"