diff --git a/packages/frontend/src/pages/auth.vue b/packages/frontend/src/pages/auth.vue
index d8f8d0b428..4170b4f73e 100644
--- a/packages/frontend/src/pages/auth.vue
+++ b/packages/frontend/src/pages/auth.vue
@@ -62,7 +62,7 @@ function accepted() {
 	state.value = 'accepted';
 	if (session.value && session.value.app.callbackUrl) {
 		const url = new URL(session.value.app.callbackUrl);
-		if (['javascript:', 'file:', 'data:', 'mailto:', 'tel:'].includes(url.protocol)) throw new Error('invalid url');
+		if (['javascript:', 'file:', 'data:', 'mailto:', 'tel:', 'vbscript:'].includes(url.protocol)) throw new Error('invalid url');
 		location.href = `${session.value.app.callbackUrl}?token=${session.value.token}`;
 	}
 }
diff --git a/packages/frontend/src/pages/miauth.vue b/packages/frontend/src/pages/miauth.vue
index e89dd5c4a5..e85d2c29c1 100644
--- a/packages/frontend/src/pages/miauth.vue
+++ b/packages/frontend/src/pages/miauth.vue
@@ -65,7 +65,7 @@ async function onAccept(token: string) {
 
 	if (props.callback && props.callback !== '') {
 		const cbUrl = new URL(props.callback);
-		if (['javascript:', 'file:', 'data:', 'mailto:', 'tel:'].includes(cbUrl.protocol)) throw new Error('invalid url');
+		if (['javascript:', 'file:', 'data:', 'mailto:', 'tel:', 'vbscript:'].includes(cbUrl.protocol)) throw new Error('invalid url');
 		cbUrl.searchParams.set('session', props.session);
 		location.href = cbUrl.toString();
 	} else {