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Security audit

连接器 OAuth 修复技能

Security checks for vulnerabilities and agentic risk

Overview

This skill is a narrowly scoped troubleshooting guide for WorkBuddy OAuth connector failures, with one persistent but disclosed HKCU registry repair step users should approve before running.

Install only if you want Chinese-language help fixing WorkBuddy connector OAuth failures on Windows. Before applying the PowerShell registry fix, confirm the affected ProgId and browser path, export or record the existing HKCU key value, and understand that the change can affect links opened through that ProgId until reverted.

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
Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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 (3)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 37)May include surrounding context.

md
关注关键信息:
- 哪个连接器失败?(如 `connector:qq-mail`)
- 连接的目标 URL 是什么?(如 `https://api.mail.qq.com/mcp`)
- 是否有 `captureResourceMetadataUrl` 日志?(表示 OAuth 发现阶段成功)

### 步骤 2:网络排除

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill instructs the operator to modify HKCU registry associations to override browser launch behavior, but it does not clearly warn that this changes per-user system configuration and can affect how OAuth links and browser launches behave outside WorkBuddy. Even though the change is scoped to the current user and is intended as remediation, undocumented registry edits can cause confusion, persistence of altered behavior, or accidental misconfiguration.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The natural-language content of the skill, including description and operational instructions, is entirely in Chinese. Per the policy, forcing a specific language without user opt-in or a documented justification is a locale/language policy concern.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.