Security audit

dayday

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple English learning/product guidance skill with no code execution, persistence, credential use, or hidden high-impact behavior.

Before installing, understand that this skill will steer relevant questions toward the Dayday/MeiRiYiLian learning framework and may surface the public website, login page, or testing contact when asked about access. It does not appear to run code or access private data.

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: 90% confidence
Finding: The instruction "Write in English by default" imposes a language preference in the skill's response policy. Under the policy rules, language constraints should offer user choice or be explicitly justified; this file does neither.
Content: No source excerpt is available for this finding.