diff --git a/apps/common/permissions.py b/apps/common/permissions.py
index b7d3691e2..cfb0c9d88 100644
--- a/apps/common/permissions.py
+++ b/apps/common/permissions.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 #
+import hmac
 import time
 
 from django.conf import settings
@@ -55,7 +56,10 @@ class WithBootstrapToken(permissions.BasePermission):
             return False
 
         request_bootstrap_token = authorization.split()[-1]
-        return settings.BOOTSTRAP_TOKEN == request_bootstrap_token
+        return hmac.compare_digest(
+            settings.BOOTSTRAP_TOKEN.encode(),
+            request_bootstrap_token.encode()
+        )
 
 
 class ServiceAccountSignaturePermission(permissions.BasePermission):
diff --git a/apps/jumpserver/middleware.py b/apps/jumpserver/middleware.py
index 0b525f021..966200ff9 100644
--- a/apps/jumpserver/middleware.py
+++ b/apps/jumpserver/middleware.py
@@ -18,8 +18,11 @@ from django.urls import reverse
 from django.utils import timezone
 from rest_framework import status
 
+from common.utils import get_logger
 from .utils import set_current_request
 
+logger = get_logger(__name__)
+
 IGNORE_CSRF_CHECK = '*' in os.getenv("DOMAINS", "").split(',')
 
 
@@ -148,8 +151,9 @@ class EndMiddleware:
 
     def process_exception(self, request, exception):
         if isinstance(exception, OperationalError):
+            logger.debug("Database operational error: %s", exception)
             return JsonResponse({
-                'error': 'Database OperationalError: ' + str(exception),
+                'error': 'Service temporarily unavailable',
                 'message': 'Database operation failed, please try again later.',
                 'code': 'DB_ERROR'
             }, status=status.HTTP_503_SERVICE_UNAVAILABLE)
diff --git a/apps/terminal/mixin.py b/apps/terminal/mixin.py
index 6a697527d..c35440bd4 100644
--- a/apps/terminal/mixin.py
+++ b/apps/terminal/mixin.py
@@ -1,4 +1,5 @@
 import os
+import re
 
 from django.utils.translation import get_language
 
@@ -15,11 +16,23 @@ class LokiMixin:
         return get_loki_client()
 
     @staticmethod
-    def create_loki_query(components, search):
+    def _escape_loki_regex(value):
+        # 转义 \ " { } | = ~ ! 等 LogQL stream selector 特殊字符
+        return re.sub(r'([\\"{}\[\]|=~!()])', r"\\\1", str(value))
+
+    @staticmethod
+    def _escape_loki_filter(value):
+        # 转义 line filter 中的 \ 和 " 防止逃逸
+        return str(value).replace("\\", "\\\\").replace('"', '\\"')
+
+    @classmethod
+    def create_loki_query(cls, components, search):
         stream_selector = '{component!=""}'
         if components:
-            stream_selector = '{component=~"%s"}' % components
-        query = f'{stream_selector} |="{search}"'
+            escaped = cls._escape_loki_regex(components)
+            stream_selector = '{component=~"%s"}' % escaped
+        escaped_search = cls._escape_loki_filter(search)
+        query = f'{stream_selector} |="{escaped_search}"'
         return query