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Security audit

Formstack

Security checks for vulnerabilities and agentic risk

Overview

The skill is coherent for Formstack automation, but its setup uses direct remote script execution while the skill can change or delete Formstack data.

Review the oo CLI installation method before installing. Prefer a verified installer, checksum, signature, or package-manager flow if available, and only connect the intended Formstack account. Confirm all create, update, and delete actions carefully because they affect live Formstack data.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The skill instructs users to install the CLI by piping a remotely fetched script directly into bash, which is a classic supply-chain risk. If the install endpoint, transport, or hosting account is compromised, arbitrary code will execute on the user's machine with the user's privileges; because this appears in a setup flow for a broadly scoped integration skill, the context increases the likelihood that users may follow it without scrutiny.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

Static analysis

No suspicious patterns detected.