Security audit

wechat-auto-reply-assistant

Security checks for vulnerabilities and agentic risk

Overview

This is a narrow prompt-only WeChat reply helper that generates suggested Chinese-language responses from text the user provides.

Installers should understand that this skill is for drafting replies, not for automatically reading or sending WeChat messages. Review generated messages before sending, especially in customer support or sensitive personal conversations, and adjust the language rule if non-Chinese replies are needed.

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

Category: Not specified by scanner
Confidence: 94% confidence
Finding: The instruction "Use natural spoken Chinese" imposes a specific language on all outputs. The file does not indicate that the user can choose another language or that the skill is restricted to a clearly justified Chinese-only context, which creates a locale policy concern.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.