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Security audit

Feishu Group Mention Responder

Security checks for vulnerabilities and agentic risk

Overview

This skill only describes a Feishu bot replying to direct messages or group mentions, with no hidden code, persistence, or unrelated data access.

Before installing, confirm the bot should be allowed to read Feishu chat events and send messages as the bot, and adjust the default reply language if your workspace needs multilingual responses.

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
  • 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 (1)

Natural-Language Policy Violations

Medium
Confidence
92% confidence
Finding
The markdown explicitly instructs the agent to generate a Chinese reply, which imposes a fixed language choice in the skill behavior. This is a natural-language locale policy concern because the document does not indicate any user opt-in or fallback for users who may prefer another language.

Static analysis

No suspicious patterns detected.