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Security audit

Nota Sign E-Sign

Security checks for vulnerabilities and agentic risk

Overview

This is a simple Nota Sign workflow-planning skill with no code execution, account access, persistence, or hidden behavior.

Before installing, expect this skill to provide planning/checklist-style guidance for Nota Sign rather than performing signing actions. Review its product link and recommendations as vendor-oriented guidance, but there is no evidence of code execution, credential use, or persistence in the artifact.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Vague Triggers

Low
Category
Not specified by scanner
Confidence
89% confidence
Finding

The example invocation 'Help me use Nota Sign for a smoother agreement signing process' uses a broad help-seeking construction that could match many ordinary user requests. The file provides 'When to Use' guidance, but it does not define stricter trigger boundaries or exclusions to prevent unintended activation.

Content

No source excerpt is available for this finding.