🔒️(frontend) fix an XSS vulnerability on the recording page

An XSS vulnerability was identified by an open-source contributor. While the
impact was limited, only a room owner could inject the content and then view the
recording page, it is important to address, especially before introducing
multi-owner support.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Fixed
+
+- 🔒️(frontend) fix an XSS vulnerability on the recording page #911
+
 ## [1.4.0] - 2026-01-25
 
 ### Added

src/frontend/src/features/recording/routes/RecordingDownload.tsx

@@ -104,14 +104,12 @@ export const RecordingDownload = () => {
               {t('success.title')}
             </H>
             <Text centered margin="md" wrap={'balance'}>
-              <span
+              <span>
-                dangerouslySetInnerHTML={{
+                {t('success.body', {
-                  __html: t('success.body', {
+                  room: data.room.name,
-                    room: data.room.name,
+                  created_at: formatDate(data.created_at, 'YYYY-MM-DD HH:mm'),
-                    created_at: formatDate(data.created_at, 'YYYY-MM-DD HH:mm'),
+                })}
-                  }),
+              </span>
-                }}
-              />
               <span>
                 {configData?.recording?.expiration_days && (
                   <>

src/frontend/src/locales/de/recording.json

@@ -17,7 +17,7 @@
   },
   "success": {
     "title": "Ihre Aufzeichnung ist bereit!",
-    "body": "Aufzeichnung des Treffens <b>{{room}}</b> vom {{created_at}}.",
+    "body": "Aufzeichnung des Treffens {{room}} vom {{created_at}}.",
     "expiration": "Achtung, diese Aufzeichnung wird nach {{expiration_days}} Tag(en) gelöscht.",
     "button": "Herunterladen",
     "warning": {

src/frontend/src/locales/en/recording.json

@@ -17,7 +17,7 @@
   },
   "success": {
     "title": "Your recording is ready!",
-    "body": "Recording of the meeting <b>{{room}}</b> from {{created_at}}.",
+    "body": "Recording of the meeting {{room}} from {{created_at}}.",
     "expiration": "Attention, this recording will expire after {{expiration_days}} day(s).",
     "button": "Download",
     "warning": {

src/frontend/src/locales/fr/recording.json

@@ -17,7 +17,7 @@
   },
   "success": {
     "title": "Votre enregistrement est prêt !",
-    "body": "Enregistrement de la réunion <b>{{room}}</b> du {{created_at}}.",
+    "body": "Enregistrement de la réunion {{room}} du {{created_at}}.",
     "expiration": "Attention cet enregistrement expirera au bout de {{expiration_days}} jour(s).",
     "button": "Télécharger",
     "warning": {

src/frontend/src/locales/nl/recording.json

@@ -17,7 +17,7 @@
   },
   "success": {
     "title": "Je opname is klaar!",
-    "body": "Opname van de vergadering <b>{{room}}</b> op {{created_at}}.",
+    "body": "Opname van de vergadering {{room}} op {{created_at}}.",
     "expiration": "Let op, deze opname verloopt na {{expiration_days}} dag(en).",
     "button": "Downloaden",
     "warning": {