diff --git a/CHANGELOG.md b/CHANGELOG.md
index c85dc00011..7b72842613 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
 - Fix: Turnstileが失敗・期限切れした際にも成功扱いとなってしまう問題を修正  
   (Cherry-picked from https://github.com/MisskeyIO/misskey/pull/768)
 - Fix: デッキのタイムラインカラムで「センシティブなファイルを含むノートを表示」設定が使用できなかった問題を修正
+- Fix: Encode RSS urls with escape sequences before fetching allowing query parameters to be used
 
 ### Server
 - Fix: Nested proxy requestsを検出した際にブロックするように
diff --git a/packages/frontend/src/ui/_common_/statusbar-rss.vue b/packages/frontend/src/ui/_common_/statusbar-rss.vue
index 550fc39b00..da8fa8bb21 100644
--- a/packages/frontend/src/ui/_common_/statusbar-rss.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-rss.vue
@@ -48,7 +48,7 @@ const fetching = ref(true);
 const key = ref(0);
 
 const tick = () => {
-	window.fetch(`/api/fetch-rss?url=${props.url}`, {}).then(res => {
+	window.fetch(`/api/fetch-rss?url=${encodeURIComponent(props.url)}`, {}).then(res => {
 		res.json().then((feed: Misskey.entities.FetchRssResponse) => {
 			if (props.shuffle) {
 				shuffle(feed.items);
diff --git a/packages/frontend/src/widgets/WidgetRss.vue b/packages/frontend/src/widgets/WidgetRss.vue
index 3e43687709..92dc6d148e 100644
--- a/packages/frontend/src/widgets/WidgetRss.vue
+++ b/packages/frontend/src/widgets/WidgetRss.vue
@@ -70,7 +70,7 @@ const items = computed(() => rawItems.value.slice(0, widgetProps.maxEntries));
 const fetching = ref(true);
 const fetchEndpoint = computed(() => {
 	const url = new URL('/api/fetch-rss', base);
-	url.searchParams.set('url', widgetProps.url);
+	url.searchParams.set('url', encodeURIComponent(widgetProps.url));
 	return url;
 });
 const intervalClear = ref<(() => void) | undefined>();
diff --git a/packages/frontend/src/widgets/WidgetRssTicker.vue b/packages/frontend/src/widgets/WidgetRssTicker.vue
index 4f594b720f..6957878572 100644
--- a/packages/frontend/src/widgets/WidgetRssTicker.vue
+++ b/packages/frontend/src/widgets/WidgetRssTicker.vue
@@ -99,7 +99,7 @@ const items = computed(() => {
 const fetching = ref(true);
 const fetchEndpoint = computed(() => {
 	const url = new URL('/api/fetch-rss', base);
-	url.searchParams.set('url', widgetProps.url);
+	url.searchParams.set('url', encodeURIComponent(widgetProps.url));
 	return url;
 });
 const intervalClear = ref<(() => void) | undefined>();