diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36d9fcc4f4..1e10edf683 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,14 @@
 You should also include the user name that made the change.
 -->
 
+## 13.3.1 (2023/02/04)
+
+### Bugfixes
+- Client: カスタム絵文字にアニメーション画像を再生しない設定が適用されていない問題を修正
+- Client: オートコンプリートでUnicode絵文字がカスタム絵文字として表示されてしまうのを修正
+- Client: Fix Vue-plyr CORS issue
+- Client: validate urls to improve security
+
 ## 13.3.0 (2023/02/03)
 ### Changes
 - twitter/github/discord連携機能が削除されました
diff --git a/locales/de-DE.yml b/locales/de-DE.yml
index a3e8f221df..423116416a 100644
--- a/locales/de-DE.yml
+++ b/locales/de-DE.yml
@@ -68,7 +68,7 @@ export: "Export"
 files: "Dateien"
 download: "Herunterladen"
 driveFileDeleteConfirm: "Möchtest du die Datei „{name}“ wirklich löschen? Notizen mit dieser Datei werden ebenso verschwinden."
-unfollowConfirm: "Möchtest du {name} nicht mehr folgen?"
+unfollowConfirm: "Möchtest du {name} wirklich nicht mehr folgen?"
 exportRequested: "Du hast einen Export angefragt. Dies kann etwas Zeit in Anspruch nehmen. Sobald der Export abgeschlossen ist, wird er deiner Drive hinzugefügt."
 importRequested: "Du hast einen Import angefragt. Dies kann etwas Zeit in Anspruch nehmen."
 lists: "Listen"
@@ -94,7 +94,7 @@ defaultNoteVisibility: "Standardsichtbarkeit"
 follow: "Folgen"
 followRequest: "Follow-Anfrage senden"
 followRequests: "Follow-Anfragen"
-unfollow: "Nicht mehr folgen"
+unfollow: "Entfolgen"
 followRequestPending: "Follow-Anfrage ausstehend"
 enterEmoji: "Gib ein Emoji ein"
 renote: "Renote"
diff --git a/locales/en-US.yml b/locales/en-US.yml
index 4e2f18629a..4fd3bf3f0d 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -68,7 +68,7 @@ export: "Export"
 files: "Files"
 download: "Download"
 driveFileDeleteConfirm: "Are you sure you want to delete the file \"{name}\"? Notes with this file attached will also be deleted."
-unfollowConfirm: "Are you sure that you want to unfollow {name}?"
+unfollowConfirm: "Are you sure you want to unfollow {name}?"
 exportRequested: "You've requested an export. This may take a while. It will be added to your Drive once completed."
 importRequested: "You've requested an import. This may take a while."
 lists: "Lists"
diff --git a/locales/es-ES.yml b/locales/es-ES.yml
index 7323494d61..3e062ba51b 100644
--- a/locales/es-ES.yml
+++ b/locales/es-ES.yml
@@ -943,8 +943,8 @@ _achievements:
   earnedAt: "Desbloqueado el"
   _types:
     _notes1:
-      title: "Configurando mis espacio"
-      description: "Publicar tu primera nota"
+      title: "¡Hola Misskey!"
+      description: "Publicaste tu primera nota"
       flavor: "¡Pasándola bien con Misskey!"
     _notes10:
       title: "Algunas notas"
@@ -1233,8 +1233,8 @@ _role:
     or: "Condicional OR"
     not: "Condicional NOT"
 _sensitiveMediaDetection:
-  description: "Reduce el esfuerzo de la moderación el el servidor a través del reconocimiento automático de contenido NSFW usando 'Machine Learning'. Esto puede incrementar ligeramente la carga en el servidor."
-  sensitivity: "Sensibilidad de detección"
+  description: "Reduce el esfuerzo de la moderación en el servidor a través del reconocimiento automático de contenido NSFW usando 'Machine Learning'. Esto puede incrementar ligeramente la carga en el servidor."
+  sensitivity: "Sensibilidad de la detección"
   sensitivityDescription: "Reducir la sensibilidad puede acarrear a varios falsos positivos, mientras que incrementarla puede reducir las detecciones (falsos negativos)."
   setSensitiveFlagAutomatically: "Marcar como NSFW"
   setSensitiveFlagAutomaticallyDescription: "Los resultados de la detección interna pueden ser retenidos incluso si la opción está desactivada."
diff --git a/locales/zh-CN.yml b/locales/zh-CN.yml
index fba04147d9..295fc6e349 100644
--- a/locales/zh-CN.yml
+++ b/locales/zh-CN.yml
@@ -1072,19 +1072,21 @@ _achievements:
       description: "第一次被关注"
     _followers10:
       title: "关注我吧！"
-      description: "关注者超过10人"
+      description: "拥有超过10名关注者"
     _followers50:
       title: "三五成群"
-      description: "关注者超过50人"
+      description: "拥有超过50名关注者"
     _followers100:
       title: "胜友如云"
-      description: "关注者超过100人"
+      description: "拥有超过100名关注者"
     _followers300:
       title: "排列成行"
-      description: "关注者超过300人"
+      description: "拥有超过300名关注者"
     _followers500:
       title: "信号塔"
-      description: "关注者超过500人"
+      description: "拥有超过500名关注者"
+    _followers1000:
+      description: "拥有超过1000名关注者"
     _collectAchievements30:
       title: "成就收藏家"
       description: "获得超过30个成就"
@@ -1096,6 +1098,7 @@ _achievements:
       description: "发布\"I ❤ #Misskey\"帖子"
       flavor: "感谢您使用 Misskey ！ by 开发团队"
     _foundTreasure:
+      title: "寻宝"
       description: "发现了隐藏的宝藏"
     _client30min:
       title: "休息一下！"
@@ -1122,11 +1125,13 @@ _achievements:
       description: "查看了实例信息中的图表"
     _outputHelloWorldOnScratchpad:
       title: "Hello, world!"
+      description: "在AiScript控制台中输出 hello world"
     _open3windows:
       title: "多窗口"
       description: "打开了三个或更多的窗口"
     _driveFolderCircularReference:
       title: "循环引用"
+      description: "试图对网盘中的文件夹进行循环嵌套"
     _reactWithoutRead:
       title: "有好好读过吗？"
       description: "在含有100字以上的帖子被发出三秒内做出回应"
diff --git a/package.json b/package.json
index 09d34690e1..532ba6570f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "13.3.0",
+	"version": "13.3.1",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
diff --git a/packages/frontend/src/components/MkAutocomplete.vue b/packages/frontend/src/components/MkAutocomplete.vue
index 27997eb330..e523b988b0 100644
--- a/packages/frontend/src/components/MkAutocomplete.vue
+++ b/packages/frontend/src/components/MkAutocomplete.vue
@@ -17,7 +17,8 @@
 	</ol>
 	<ol v-else-if="emojis.length > 0" ref="suggests" :class="$style.list">
 		<li v-for="emoji in emojis" :key="emoji.emoji" :class="$style.item" tabindex="-1" @click="complete(type, emoji.emoji)" @keydown="onKeydown">
-			<MkCustomEmoji :name="emoji.emoji" :class="$style.emoji"/>
+			<MkCustomEmoji v-if="'isCustomEmoji' in emoji && emoji.isCustomEmoji" :name="emoji.emoji" :class="$style.emoji"/>
+			<MkEmoji v-else :emoji="emoji.emoji" :class="$style.emoji"/>
 			<!-- eslint-disable-next-line vue/no-v-html -->
 			<span v-if="q" :class="$style.emojiName" v-html="sanitizeHtml(emoji.name.replace(q, `<b>${q}</b>`))"></span>
 			<span v-else v-text="emoji.name"></span>
diff --git a/packages/frontend/src/components/MkMediaVideo.vue b/packages/frontend/src/components/MkMediaVideo.vue
index 5a2da050bb..2c24c16f57 100644
--- a/packages/frontend/src/components/MkMediaVideo.vue
+++ b/packages/frontend/src/components/MkMediaVideo.vue
@@ -9,8 +9,6 @@
 	<vue-plyr>
 		<video
 			controls
-			crossorigin
-			playsinline
 			:data-poster="video.thumbnailUrl"
 		>
 			<source
diff --git a/packages/frontend/src/components/MkRetentionHeatmap.vue b/packages/frontend/src/components/MkRetentionHeatmap.vue
index b7886d1dc2..52c8b6d026 100644
--- a/packages/frontend/src/components/MkRetentionHeatmap.vue
+++ b/packages/frontend/src/components/MkRetentionHeatmap.vue
@@ -56,8 +56,6 @@ async function renderChart() {
 		}
 	}
 
-	console.log(data);
-
 	fetching = false;
 
 	await nextTick();
diff --git a/packages/frontend/src/components/MkSignin.vue b/packages/frontend/src/components/MkSignin.vue
index cc1a7c4af5..8cce1d43f6 100644
--- a/packages/frontend/src/components/MkSignin.vue
+++ b/packages/frontend/src/components/MkSignin.vue
@@ -154,7 +154,6 @@ function queryKey() {
 
 function onSubmit() {
 	signing = true;
-	console.log('submit');
 	if (!totpLogin && user && user.twoFactorEnabled) {
 		if (window.PublicKeyCredential && user.securityKeys) {
 			os.api('signin', {
diff --git a/packages/frontend/src/components/MkUrlPreview.vue b/packages/frontend/src/components/MkUrlPreview.vue
index 4689f5e772..f7677faf74 100644
--- a/packages/frontend/src/components/MkUrlPreview.vue
+++ b/packages/frontend/src/components/MkUrlPreview.vue
@@ -86,6 +86,7 @@ let tweetHeight = $ref(150);
 let unknownUrl = $ref(false);
 
 const requestUrl = new URL(props.url);
+if (!['http:', 'https:'].includes(requestUrl.protocol)) throw new Error('invalid url');
 
 if (requestUrl.hostname === 'twitter.com' || requestUrl.hostname === 'mobile.twitter.com') {
 	const m = requestUrl.pathname.match(/^\/.+\/status(?:es)?\/(\d+)/);
diff --git a/packages/frontend/src/components/MkYoutubePlayer.vue b/packages/frontend/src/components/MkYoutubePlayer.vue
index d1f1f9e9c5..50d38a71bd 100644
--- a/packages/frontend/src/components/MkYoutubePlayer.vue
+++ b/packages/frontend/src/components/MkYoutubePlayer.vue
@@ -26,6 +26,7 @@ const props = defineProps<{
 }>();
 
 const requestUrl = new URL(props.url);
+if (!['http:', 'https:'].includes(requestUrl.protocol)) throw new Error('invalid url');
 
 let fetching = $ref(true);
 let title = $ref<string | null>(null);
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index 93c47f0c27..e6dedd0354 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -18,19 +18,23 @@ const props = defineProps<{
 }>();
 
 const customEmojiName = computed(() => (props.name[0] === ':' ? props.name.substr(1, props.name.length - 2) : props.name).replace('@.', ''));
-const url = computed(() => {
+
+const rawUrl = computed(() => {
 	if (props.url) {
 		return props.url;
-	} else if (props.host == null && !customEmojiName.value.includes('@')) {
-		const found = customEmojis.value.find(x => x.name === customEmojiName.value);
-		return found ? defaultStore.state.disableShowingAnimatedImages ? getStaticImageUrl(found.url) : found.url : null;
-	} else {
-		const rawUrl = props.host ? `/emoji/${customEmojiName.value}@${props.host}.webp` : `/emoji/${customEmojiName.value}.webp`;
-		return defaultStore.state.disableShowingAnimatedImages
-			? getStaticImageUrl(rawUrl)
-			: rawUrl;
 	}
+	if (props.host == null && !customEmojiName.value.includes('@')) {
+		return customEmojis.value.find(x => x.name === customEmojiName.value)?.url || null;
+	}
+	return props.host ? `/emoji/${customEmojiName.value}@${props.host}.webp` : `/emoji/${customEmojiName.value}.webp`;
 });
+
+const url = computed(() =>
+	defaultStore.reactiveState.disableShowingAnimatedImages.value && rawUrl.value
+		? getStaticImageUrl(rawUrl.value)
+		: rawUrl.value
+);
+
 const alt = computed(() => `:${customEmojiName.value}:`);
 let errored = $ref(url.value == null);
 </script>
diff --git a/packages/frontend/src/components/global/MkUrl.vue b/packages/frontend/src/components/global/MkUrl.vue
index 27c8329dcc..2a92780306 100644
--- a/packages/frontend/src/components/global/MkUrl.vue
+++ b/packages/frontend/src/components/global/MkUrl.vue
@@ -33,6 +33,7 @@ const props = defineProps<{
 
 const self = props.url.startsWith(local);
 const url = new URL(props.url);
+if (!['http:', 'https:'].includes(url.protocol)) throw new Error('invalid url');
 const el = ref();
 
 useTooltip(el, (showing) => {
diff --git a/packages/frontend/src/pages/miauth.vue b/packages/frontend/src/pages/miauth.vue
index a01c7c5c4b..3debaeeb61 100644
--- a/packages/frontend/src/pages/miauth.vue
+++ b/packages/frontend/src/pages/miauth.vue
@@ -70,6 +70,7 @@ async function accept(): Promise<void> {
 	state = 'accepted';
 	if (props.callback) {
 		const cbUrl = new URL(props.callback);
+		if (!['http:', 'https:'].includes(cbUrl.protocol)) throw new Error('invalid url');
 		cbUrl.searchParams.set('session', props.session);
 		location.href = cbUrl.href;
 	}
diff --git a/packages/frontend/src/pages/settings/accounts.vue b/packages/frontend/src/pages/settings/accounts.vue
index c2d511e744..a5eaae2bad 100644
--- a/packages/frontend/src/pages/settings/accounts.vue
+++ b/packages/frontend/src/pages/settings/accounts.vue
@@ -38,14 +38,11 @@ const init = async () => {
 	getAccounts().then(accounts => {
 		storedAccounts.value = accounts.filter(x => x.id !== $i!.id);
 
-		console.log(storedAccounts.value);
-
 		return os.api('users/show', {
 			userIds: storedAccounts.value.map(x => x.id),
 		});
 	}).then(response => {
 		accounts.value = response;
-		console.log(accounts.value);
 	});
 };
 
diff --git a/packages/frontend/src/scripts/idb-proxy.ts b/packages/frontend/src/scripts/idb-proxy.ts
index 218682bb56..7dbca01dea 100644
--- a/packages/frontend/src/scripts/idb-proxy.ts
+++ b/packages/frontend/src/scripts/idb-proxy.ts
@@ -8,14 +8,15 @@ import {
 
 const fallbackName = (key: string) => `idbfallback::${key}`;
 
-let idbAvailable = typeof window !== 'undefined' ? !!window.indexedDB : true;
+let idbAvailable = typeof window !== 'undefined' ? !!(window.indexedDB && window.indexedDB.open) : true;
 
 if (idbAvailable) {
-	iset('idb-test', 'test').catch(err => {
-		console.error('idb error', err);
-		console.error('indexedDB is unavailable. It will use localStorage.');
-		idbAvailable = false;
-	});
+	await iset('idb-test', 'test')
+		.catch(err => {
+			console.error('idb error', err);
+			console.error('indexedDB is unavailable. It will use localStorage.');
+			idbAvailable = false;
+		});
 } else {
 	console.error('indexedDB is unavailable. It will use localStorage.');
 }