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Security audit

笔记同步助手-将文章、视频整理成md文档

Security checks for vulnerabilities and agentic risk

Overview

NoteHelper provides clearly disclosed cloud saving and search, with user confirmation before uploads or charges.

Install if you trust NoteHelper with the content and search terms you choose to send. Keep the API key private, prefer SecretRef configuration, and review link-processing charges before confirming. Both bundled files and the scanner's reference gaps were inspected; server-side retention, access controls, and billing behavior were not independently tested.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (5)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 109)May include surrounding context.

  • 安全构造请求体：标题、正文、关键词等用户内容可能含引号、换行或 shell 特殊字符，不要直接拼进单引号 JSON 字符串。先用 JSON 序列化工具生成请求体，再经 stdin 传给 curl，例如：
    bash
    jq -n --arg title "$TITLE" --arg url "$URL" '{title:$title, url:$url}' \
  | curl -sS --connect-timeout 10 --max-time 30 -w '\nHTTP %{http_code}\n' \
      -X POST https://claw.notebooksyncer.com/api/articles \
      -H "x-api-key: $NOTEHELPER_API_KEY" -H "Content-Type: application/json" \
      --data-binary @-

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 151)May include surrounding context.

bash
jq -n --arg title "$TITLE" --arg url "$URL" \
  '{title:$title, url:$url, labels:["前端","JavaScript"]}' \
| curl -sS --connect-timeout 10 --max-time 30 -w '\nHTTP %{http_code}\n' -X POST https://claw.notebooksyncer.com/api/articles \
  -H "x-api-key: $NOTEHELPER_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @-

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 181)May include surrounding context.

bash
jq -n --arg u "$LINK_URL" '{note_type:"link", link_url:$u}' \
| curl -sS --connect-timeout 10 --max-time 30 -w '\nHTTP %{http_code}\n' -X POST https://claw.notebooksyncer.com/note/save \
  -H "x-api-key: $NOTEHELPER_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @-

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 221)May include surrounding context.

bash
jq -n --arg t "$TASK_ID" '{task_id:$t}' \
| curl -sS --connect-timeout 10 --max-time 30 -w '\nHTTP %{http_code}\n' -X POST https://claw.notebooksyncer.com/note/task/progress \
  -H "x-api-key: $NOTEHELPER_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @-

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 262)May include surrounding context.

md
query: "query{search(query:\"\",first:10,after:0){edges{node{id title url author savedAt}}pageInfo{totalCount hasNextPage}}}",
  variables: {query:$q, first:10, after:0}
}' \
| curl -sS --connect-timeout 10 --max-time 30 -w '\nHTTP %{http_code}\n' -X POST https://claw.notebooksyncer.com/api/graphql \
  -H "x-api-key: $NOTEHELPER_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @-