diff --git a/frontend/src/views/setting/system/config/components/authConfig.vue b/frontend/src/views/setting/system/config/components/authConfig.vue
index a55e704b73..2ee64307c3 100644
--- a/frontend/src/views/setting/system/config/components/authConfig.vue
+++ b/frontend/src/views/setting/system/config/components/authConfig.vue
@@ -577,6 +577,7 @@
             v-model:model-value="LDAPForm.password"
             :placeholder="t('system.config.auth.testLoginPasswordPlaceholder')"
             autocomplete="new-password"
+            :max-length="64"
           />
         </a-form-item>
       </a-form>