From b6b82da13c75d72edabc94ba16ae6d4d8c347f95 Mon Sep 17 00:00:00 2001
From: "Torsten Schulz (local)" <tsschulz@gmx.net>
Date: Tue, 27 Oct 2026 15:32:16 +0100
Subject: [PATCH] =?UTF-8?q?fix:=20sichere=20Brotli-Laufzeit=20ab=20und=20e?=
 =?UTF-8?q?rh=C3=B6he=20Patchversionen?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 .nvmrc                        |  1 +
 package-lock.json             |  7 +++++--
 package.json                  |  5 ++++-
 scripts/require-safe-node.cjs | 22 ++++++++++++++++++++++
 server/index.js               |  1 +
 5 files changed, 33 insertions(+), 3 deletions(-)
 create mode 100644 .nvmrc
 create mode 100644 scripts/require-safe-node.cjs

diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..ce62013
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+24.22.1
diff --git a/package-lock.json b/package-lock.json
index 3fc65db..aadd930 100755
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ypchat",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ypchat",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "dependencies": {
         "axios": "^1.6.0",
         "cookie-parser": "^1.4.6",
@@ -19,6 +19,9 @@
       },
       "devDependencies": {
         "concurrently": "^8.2.2"
+      },
+      "engines": {
+        "node": "^22.23.4 || ^24.22.1 || ^26.12.1"
       }
     },
     "node_modules/@babel/runtime": {
diff --git a/package.json b/package.json
index e8b6164..80b4c0a 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ypchat",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "type": "module",
   "description": "YpChat Node.js/Vue Application",
   "scripts": {
@@ -25,5 +25,8 @@
   },
   "devDependencies": {
     "concurrently": "^8.2.2"
+  },
+  "engines": {
+    "node": "^22.23.4 || ^24.22.1 || ^26.12.1"
   }
 }
diff --git a/scripts/require-safe-node.cjs b/scripts/require-safe-node.cjs
new file mode 100644
index 0000000..b5c7311
--- /dev/null
+++ b/scripts/require-safe-node.cjs
@@ -0,0 +1,22 @@
+// CVE-2026-111497: Node's bundled Brotli decoder must include the security fix.
+// Check Node versions: patched releases can still report Brotli 1.2.0.
+// https://nodejs.org/en/blog/vulnerability/october-2026-security-releases
+'use strict';
+
+function requireSafeNode() {
+  const [major, minor, patch] = process.versions.node.split('.').map(Number);
+  const minimum = { 22: [23, 4], 24: [22, 1], 26: [12, 1] }[major];
+  const patched = minimum && (minor > minimum[0] ||
+    (minor === minimum[0] && patch >= minimum[1]));
+
+  if (!patched) {
+    throw new Error(
+      `CVE-2026-111497: Node.js ${process.versions.node} is not an approved patched runtime. ` +
+      'Use Node.js 22.23.4+, 24.22.1+ or 26.12.1+ within those release lines. ' +
+      'Recommended: nvm install && nvm use (see .nvmrc). Restart all server/PM2 processes after upgrading.'
+    );
+  }
+}
+
+requireSafeNode();
+module.exports = requireSafeNode;
diff --git a/server/index.js b/server/index.js
index f3abccd..da89245 100755
--- a/server/index.js
+++ b/server/index.js
@@ -1,3 +1,4 @@
+import '../scripts/require-safe-node.cjs';
 import express from 'express';
 import { createServer } from 'http';
 import { Server as SocketIOServer } from 'socket.io';