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Security audit

Feishu Manager

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed Feishu workspace management skill, but users should handle its app secret carefully and confirm any create or write actions.

Install only if you intend to let an agent manage Feishu workspace content. Use least-privilege Feishu app permissions where possible, protect the app_secret, and confirm before allowing document, wiki, bitable, or drive create/write actions.

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 (3)

Missing User Warnings

Medium
Confidence
92% confidence
Finding
The README instructs users to place a Feishu app_id and app_secret directly into configuration without any guidance on secret handling, such as using environment variables, secret managers, or avoiding commits to source control. This creates a realistic risk of credential leakage through checked-in config files, logs, screenshots, or shared examples, which could allow unauthorized access to Feishu resources exposed by the granted permissions.

Missing User Warnings

Medium
Confidence
92% confidence
Finding
The skill documentation prominently includes create/write operations for documents, wiki pages, tables, and drive folders, but it does not warn that these actions can modify or create persistent data in a user's Feishu workspace. In an agent setting, this omission increases the chance of unintended destructive or unauthorized changes because a user or orchestrator may treat the skill as informational rather than state-changing.

Natural-Language Policy Violations

Low
Confidence
82% confidence
Finding
A natural-language policy issue exists when a skill effectively forces a specific language without user opt-in. Here, the primary descriptive text is Chinese and the file does not indicate that the skill is region-specific or offer alternative language support.

Static analysis

No suspicious patterns detected.