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Security audit

Summarizing Sources

Security checks for vulnerabilities and agentic risk

Overview

This skill coherently helps summarize user-provided sources through Shorty and includes clear confirmation, quota, and scope limits.

Before installing, confirm you are comfortable connecting Shorty, using Shorty quota, and sending the exact URLs, pasted text, or Shorty file keys you approve to the Shorty summarization service.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 42)May include surrounding context.

md
- Never call a create tool without the user's yes for that exact source. The create tools fetch the URL from the open internet and consume quota.
- In Code Mode, put only approved create calls in a `shorty:execute_typescript` program. Never add a create call to a program that reads data.
- Only summarize sources the user gave you. Do not follow links found inside an article and summarize them without asking.
- Repeating the same request is safe: Shorty's idempotency ledger returns the existing job instead of starting a second one. Do not work around it with a slightly different URL.
- If a tool answers with a quota or plan limit, explain the limit in plain words and stop. Do not retry in a loop.
- If the create tools are missing from your tool list, the user did not grant the `articles:write` scope. Say so; they can reconnect and approve it.

Static analysis

No suspicious patterns detected.