Security audit

Pywayne Lark Custom Bot

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Feishu/Lark bot usage guide with disclosed webhook messaging behavior and no bundled executable code.

Install this only if you intend to let the agent help send messages or upload selected images through your Feishu/Lark bot. Treat webhook URLs, signing secrets, app IDs, and app secrets as sensitive credentials, and review messages before posting them to channels.

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

Low

Category: Not specified by scanner
Confidence: 93% confidence
Finding: The natural-language documentation from L008 onward is primarily in Chinese, and the file does not indicate that the skill is region-specific or provide users an option for another language. This can violate language/locale policy expectations when users are not given an explicit choice or opt-in.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.