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Security audit

markji-card-syntax

Security checks for vulnerabilities and agentic risk

Overview

This is a narrow Markdown guidance skill for creating Markji memory-card syntax, with no code execution, persistence, credential use, or hidden data access.

Install this if you want Chinese-language assistance creating Markji card text. Review generated media, audio, and related-card IDs yourself because the skill correctly says it should not invent them.

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
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 (3)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The description states the skill is for generating and revising content '使用中文', which imposes a specific language requirement. Under the policy, forcing a language or locale without offering user choice or documenting a justified regional constraint is a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The instruction '使用中文说明和自然、简洁的卡片文案' requires Chinese-language explanations and card text unconditionally. There is no opt-in mechanism or documented justification for restricting the skill to Chinese, which conflicts with the language/locale policy.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The title and introductory text present the skill guidance entirely in Chinese, with no indication that users may choose another language or locale. Under the stated policy, forcing a specific language without user opt-in is a natural-language policy violation.

Content

No source excerpt is available for this finding.