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Security audit

recurring-content-calendar

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed PostNitro workflow for drafting and scheduling recurring social posts, with user confirmation before connection, account selection, drafts, and scheduled publishing.

Install only if you intend to use PostNitro for recurring social publishing. Review the selected accounts, timezone, draft versus scheduled status, and recurring routine settings before approval because the skill can create future posts on connected social accounts.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill description is broad enough to auto-trigger on many generic social-posting or scheduling requests, which can route users into a workflow that connects a third-party service, discovers workspace assets, and schedules content to live accounts. In this context, overbroad activation raises the chance of unintended tool use and accidental actions on external systems, especially because the skill is capable of using account IDs, API connections, and scheduling drafts or live posts.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill instructs the agent to connect a third-party publishing server using a bearer API key and later schedule content to social accounts, but it does not prominently warn the user at the skill boundary about those sensitive actions. Without an explicit warning and confirmation step, users may not realize the skill can access workspace assets, inspect scheduled-post history, and create future posts on live accounts, increasing the risk of accidental credential use or unintended publication workflows.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.