diff --git a/back/services/cron.ts b/back/services/cron.ts
index 380428a3..751e49ce 100644
--- a/back/services/cron.ts
+++ b/back/services/cron.ts
@@ -477,7 +477,11 @@ export default class CronService {
         );
 
         let { id, command, log_path, log_name } = cron;
-        const uniqPath = log_name || (await getUniqPath(command, `${id}`));
+        // Sanitize log_name to prevent path traversal
+        const sanitizedLogName = log_name
+          ? log_name.replace(/[\/\\\.]/g, '_').replace(/^_+|_+$/g, '')
+          : '';
+        const uniqPath = sanitizedLogName || (await getUniqPath(command, `${id}`));
         const logTime = dayjs().format('YYYY-MM-DD-HH-mm-ss-SSS');
         const logDirPath = path.resolve(config.logPath, `${uniqPath}`);
         if (log_path?.split('/')?.every((x) => x !== uniqPath)) {
diff --git a/back/validation/schedule.ts b/back/validation/schedule.ts
index f8a503b8..56e15f84 100644
--- a/back/validation/schedule.ts
+++ b/back/validation/schedule.ts
@@ -37,5 +37,14 @@ export const commonCronSchema = {
   extra_schedules: Joi.array().optional().allow(null),
   task_before: Joi.string().optional().allow('').allow(null),
   task_after: Joi.string().optional().allow('').allow(null),
-  log_name: Joi.string().optional().allow('').allow(null),
+  log_name: Joi.string()
+    .optional()
+    .allow('')
+    .allow(null)
+    .pattern(/^[a-zA-Z0-9_-]+$/)
+    .max(100)
+    .messages({
+      'string.pattern.base': '日志名称只能包含字母、数字、下划线和连字符',
+      'string.max': '日志名称不能超过100个字符',
+    }),
 };
diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index 9b7d1ad7..1acaf8ad 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -524,5 +524,7 @@
   "清除成功": "Clean successful",
   "日志名称": "Log Name",
   "自定义日志文件夹名称，用于区分不同任务的日志，留空则自动生成": "Custom log folder name to distinguish logs from different tasks. Leave blank to auto-generate",
-  "请输入自定义日志文件夹名称": "Please enter a custom log folder name"
+  "请输入自定义日志文件夹名称": "Please enter a custom log folder name",
+  "日志名称只能包含字母、数字、下划线和连字符": "Log name can only contain letters, numbers, underscores and hyphens",
+  "日志名称不能超过100个字符": "Log name cannot exceed 100 characters"
 }
diff --git a/src/locales/zh-CN.json b/src/locales/zh-CN.json
index 42788752..75d40598 100644
--- a/src/locales/zh-CN.json
+++ b/src/locales/zh-CN.json
@@ -524,5 +524,7 @@
   "清除成功": "清除成功",
   "日志名称": "日志名称",
   "自定义日志文件夹名称，用于区分不同任务的日志，留空则自动生成": "自定义日志文件夹名称，用于区分不同任务的日志，留空则自动生成",
-  "请输入自定义日志文件夹名称": "请输入自定义日志文件夹名称"
+  "请输入自定义日志文件夹名称": "请输入自定义日志文件夹名称",
+  "日志名称只能包含字母、数字、下划线和连字符": "日志名称只能包含字母、数字、下划线和连字符",
+  "日志名称不能超过100个字符": "日志名称不能超过100个字符"
 }
diff --git a/src/pages/crontab/modal.tsx b/src/pages/crontab/modal.tsx
index 7f87f427..34c0f9b9 100644
--- a/src/pages/crontab/modal.tsx
+++ b/src/pages/crontab/modal.tsx
@@ -186,8 +186,21 @@ const CronModal = ({
           tooltip={intl.get(
             '自定义日志文件夹名称，用于区分不同任务的日志，留空则自动生成',
           )}
+          rules={[
+            {
+              pattern: /^[a-zA-Z0-9_-]*$/,
+              message: intl.get('日志名称只能包含字母、数字、下划线和连字符'),
+            },
+            {
+              max: 100,
+              message: intl.get('日志名称不能超过100个字符'),
+            },
+          ]}
         >
-          <Input placeholder={intl.get('请输入自定义日志文件夹名称')} />
+          <Input
+            placeholder={intl.get('请输入自定义日志文件夹名称')}
+            maxLength={100}
+          />
         </Form.Item>
         <Form.Item
           name="task_before"