diff --git a/server/src/index.ts b/server/src/index.ts
index a50c228..ff26d82 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -159,7 +159,7 @@ app.use('/api/filters', apiLimiter, filterRoutes)
 app.use('/api/admin', apiLimiter, adminRoutes)
 app.use('/api/feedback', apiLimiter, feedbackRoutes)
 app.use('/api/config', apiLimiter, configRoutes)
-app.use('/api/track', trackRoutes)
+app.use('/api/track', apiLimiter, trackRoutes)
 app.use('/api/logs', apiLimiter, logsRoutes)
 
 app.get('/api/health', async (_req, res) => {
diff --git a/server/src/routes/config.ts b/server/src/routes/config.ts
index 8ada268..fdb076d 100644
--- a/server/src/routes/config.ts
+++ b/server/src/routes/config.ts
@@ -19,6 +19,9 @@ router.get('/', async (_req, res) => {
   }
 })
 
+/** 允许修改的配置键白名单 */
+const ALLOWED_KEYS = ['app_name', 'app_version', 'app_slogan', 'app_description']
+
 /** 更新配置（管理员权限） */
 router.put('/', requireAdmin, async (req, res) => {
   try {
@@ -27,8 +30,14 @@ router.put('/', requireAdmin, async (req, res) => {
       return res.status(400).json({ code: 40001, message: '无效的配置数据' })
     }
 
-    // 批量更新配置
+    // 批量更新配置（只允许白名单内的键）
     for (const [key, value] of Object.entries(data)) {
+      if (!ALLOWED_KEYS.includes(key)) {
+        return res.status(400).json({ code: 40001, message: `不允许修改配置项: ${key}` })
+      }
+      if (typeof value !== 'string' || value.length > 500) {
+        return res.status(400).json({ code: 40001, message: `配置值无效或过长: ${key}` })
+      }
       await pool.query(
         'INSERT INTO sys_config (config_key, config_value) VALUES (?, ?) ON DUPLICATE KEY UPDATE config_value = ?',
         [key, value, value]
diff --git a/server/src/routes/logs.ts b/server/src/routes/logs.ts
index e285d6f..5dd7644 100644
--- a/server/src/routes/logs.ts
+++ b/server/src/routes/logs.ts
@@ -92,7 +92,87 @@ router.get('/stats', requireAdmin, (_req, res) => {
   }
 })
 
-/** 查询指定日期的日志 */
+/** 获取埋点统计（必须在 /:date 之前注册） */
+router.get('/track/stats', requireAdmin, async (_req, res) => {
+  try {
+    // 今日统计
+    const [todayRows] = await pool.execute(
+      `SELECT event, COUNT(*) as count FROM track_events
+       WHERE DATE(created_at) = CURDATE()
+       GROUP BY event ORDER BY count DESC`
+    )
+
+    // 最近7天每日统计
+    const [dailyRows] = await pool.execute(
+      `SELECT DATE(created_at) as date, COUNT(*) as count FROM track_events
+       WHERE created_at >= DATE_SUB(CURDATE(), INTERVAL 7 DAY)
+       GROUP BY DATE(created_at) ORDER BY date DESC`
+    )
+
+    // 最近7天事件分布
+    const [eventRows] = await pool.execute(
+      `SELECT event, COUNT(*) as count FROM track_events
+       WHERE created_at >= DATE_SUB(CURDATE(), INTERVAL 7 DAY)
+       GROUP BY event ORDER BY count DESC LIMIT 10`
+    )
+
+    res.json({
+      code: 0,
+      data: {
+        today: todayRows,
+        daily: dailyRows,
+        events: eventRows
+      }
+    })
+  } catch (err) {
+    console.error('[Track] Stats error:', err)
+    res.status(500).json({ code: 50000, message: '获取埋点统计失败' })
+  }
+})
+
+/** 查询埋点事件（必须在 /:date 之前注册） */
+router.get('/track/list', requireAdmin, async (req, res) => {
+  try {
+    const { event, page = '1', pageSize = '50' } = req.query
+    const pNum = Math.max(1, parseInt(page as string) || 1)
+    const pSize = Math.min(200, Math.max(1, parseInt(pageSize as string) || 50))
+    const offset = (pNum - 1) * pSize
+
+    let where = '1=1'
+    const params: any[] = []
+
+    if (event && typeof event === 'string') {
+      where += ' AND t.event = ?'
+      params.push(event)
+    }
+
+    const [countResult] = await pool.execute(
+      `SELECT COUNT(*) as total FROM track_events t WHERE ${where}`,
+      params
+    )
+    const total = (countResult as any[])[0].total
+
+    const [rows] = await pool.execute(
+      `SELECT t.*, u.nickname
+       FROM track_events t
+       LEFT JOIN users u ON t.user_id = u.id
+       WHERE ${where}
+       ORDER BY t.created_at DESC
+       LIMIT ? OFFSET ?`,
+      [...params, pSize, offset]
+    )
+
+    res.json({
+      code: 0,
+      data: { list: rows, total, page: pNum, pageSize: pSize }
+    })
+  } catch (err) {
+    console.error('[Track] List error:', err)
+    res.status(500).json({ code: 50000, message: '查询埋点失败' })
+  }
+})
+
+/** 查询指定日期的日志（必须在 /track/* 之后注册） */
 router.get('/:date', requireAdmin, (req, res) => {
   try {
     const { date } = req.params
@@ -144,84 +224,4 @@ router.get('/:date', requireAdmin, (req, res) => {
   }
 })
 
-/** 获取埋点统计 */
-router.get('/track/stats', requireAdmin, async (_req, res) => {
-  try {
-    // 今日统计
-    const [todayRows] = await pool.execute(
-      `SELECT event, COUNT(*) as count FROM track_events
-       WHERE DATE(created_at) = CURDATE()
-       GROUP BY event ORDER BY count DESC`
-    )
-
-    // 最近7天每日统计
-    const [dailyRows] = await pool.execute(
-      `SELECT DATE(created_at) as date, COUNT(*) as count FROM track_events
-       WHERE created_at >= DATE_SUB(CURDATE(), INTERVAL 7 DAY)
-       GROUP BY DATE(created_at) ORDER BY date DESC`
-    )
-
-    // 最近7天事件分布
-    const [eventRows] = await pool.execute(
-      `SELECT event, COUNT(*) as count FROM track_events
-       WHERE created_at >= DATE_SUB(CURDATE(), INTERVAL 7 DAY)
-       GROUP BY event ORDER BY count DESC LIMIT 10`
-    )
-
-    res.json({
-      code: 0,
-      data: {
-        today: todayRows,
-        daily: dailyRows,
-        events: eventRows
-      }
-    })
-  } catch (err) {
-    console.error('[Track] Stats error:', err)
-    res.status(500).json({ code: 50000, message: '获取埋点统计失败' })
-  }
-})
-
-/** 查询埋点事件 */
-router.get('/track/list', requireAdmin, async (req, res) => {
-  try {
-    const { event, page = '1', pageSize = '50' } = req.query
-    const pNum = Math.max(1, parseInt(page as string) || 1)
-    const pSize = Math.min(200, Math.max(1, parseInt(pageSize as string) || 50))
-    const offset = (pNum - 1) * pSize
-
-    let where = '1=1'
-    const params: any[] = []
-
-    if (event && typeof event === 'string') {
-      where += ' AND t.event = ?'
-      params.push(event)
-    }
-
-    const [countResult] = await pool.execute(
-      `SELECT COUNT(*) as total FROM track_events t WHERE ${where}`,
-      params
-    )
-    const total = (countResult as any[])[0].total
-
-    const [rows] = await pool.execute(
-      `SELECT t.*, u.nickname
-       FROM track_events t
-       LEFT JOIN users u ON t.user_id = u.id
-       WHERE ${where}
-       ORDER BY t.created_at DESC
-       LIMIT ? OFFSET ?`,
-      [...params, pSize, offset]
-    )
-
-    res.json({
-      code: 0,
-      data: { list: rows, total, page: pNum, pageSize: pSize }
-    })
-  } catch (err) {
-    console.error('[Track] List error:', err)
-    res.status(500).json({ code: 50000, message: '查询埋点失败' })
-  }
-})
-
 export default router
diff --git a/server/src/routes/track.ts b/server/src/routes/track.ts
index 7ad3eac..1879790 100644
--- a/server/src/routes/track.ts
+++ b/server/src/routes/track.ts
@@ -13,11 +13,15 @@ router.post('/', async (req, res) => {
       return res.status(400).json({ code: 40001, message: '无效的埋点数据' })
     }
 
-    // 批量插入埋点事件
-    for (const event of events) {
+    // 批量插入埋点事件（限制每个事件的字段长度）
+    for (const event of events.slice(0, 50)) { // 最多 50 个事件
+      const eventType = typeof event.event === 'string' ? event.event.slice(0, 50) : 'unknown'
+      const page = typeof event.page === 'string' ? event.page.slice(0, 200) : ''
+      const data = event.data && typeof event.data === 'object' ? event.data : {}
+
       await pool.execute(
         'INSERT INTO track_events (event, page, data, user_id) VALUES (?, ?, ?, ?)',
-        [event.event, event.page || '', JSON.stringify(event.data || {}), userId]
+        [eventType, page, JSON.stringify(data), userId]
       )
     }