From 3e27d5028c8228e28ef0d0332ed1c390b7209276 Mon Sep 17 00:00:00 2001
From: Aotumuri <aotumuri.yt@gmail.com>
Date: Sun, 1 Jun 2025 19:48:16 +0900
Subject: [PATCH] fixed

---
 src/client/Cosmetic.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/client/Cosmetic.ts b/src/client/Cosmetic.ts
index fdbc3fefc..b560394b1 100644
--- a/src/client/Cosmetic.ts
+++ b/src/client/Cosmetic.ts
@@ -26,6 +26,12 @@ export class PatternDecoder {
   constructor(base64: string) {
     const bytes = base64url.decode(base64);
 
+    if (bytes.length < 7) {
+      throw new Error(
+        "Pattern data is too short to contain required metadata.",
+      );
+    }
+
     const version = bytes[0];
     if (version !== 1) {
       throw new Error("The pattern versions are different.");