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Security audit

Content Calendar

Security checks for vulnerabilities and agentic risk

Overview

This skill helps plan content calendars and its bundled script is limited to generating local calendar output, with no evidence of hidden data access or persistence.

Before installing, expect the skill to help draft content plans and calendars. Only let it write an output file when you have chosen the destination, and review generated post copy before publishing it anywhere.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
81% confidence
Finding

The skill instructs the agent to use scripts/build_calendar.py, which implies code/file-write capability, but the manifest does not declare any permissions or allowed-tools scope. That creates an authorization gap where the agent may invoke file-writing behavior without explicit scoping or user-visible constraint, increasing the chance of unintended filesystem side effects.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The trigger phrases are broad and map to common, everyday requests like 'post ideas' or 'what should I post', making accidental invocation more likely. Over-broad activation can cause this skill to preempt more appropriate skills or run in contexts the user did not intend, which is a routing and least-privilege problem rather than a direct exploit.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.