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Security audit

Post.at Tracking

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward guide for using a postal delivery CLI, with credential use and delivery changes aligned to its stated purpose.

Before installing, understand that this skill uses your post.at account to view delivery information and may change delivery-place preferences. Prefer environment variables or an interactive secret mechanism over putting passwords directly in command-line flags.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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)

Missing User Warnings

Medium
Confidence
95% confidence
Finding
The skill explicitly documents passing account credentials via `--username` / `--password` command-line options without warning that CLI arguments are commonly exposed through shell history, process listings, audit logs, and telemetry. Because this skill manages a real postal account, disclosure of these credentials could allow unauthorized viewing of delivery information and modification of delivery-place preferences.

Static analysis

No suspicious patterns detected.