Security audit

Multi-Account Isolation

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed checklist for authorized browser-profile isolation testing, with one supply-chain caution around an unpinned npx command.

Install only for authorized profile-isolation testing. Before running the CI check, pin `liarjs` to an audited version or install it through a committed lockfile, and keep API keys, proxy credentials, and browser profile data scoped to an isolated test environment.

A.I.G

Vulnerability Patterns

Insecure DependenciesIntroduces malicious components through unsafe dependency sources
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

Findings (1)

T08 · Insecure Dependencies

Warning

Location: SKILL.md:77
Finding: Unpinned Third-Party Package Execution Through npx
Content: View full analysis
Remediation: View remediation

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)

Rp1

Medium

Category: MCP Rug Pull
Confidence: 92% confidence
Finding: The skill instructs users to run npx liarjs without pinning a version, which causes code to be fetched and executed from the package registry at runtime. If the package is compromised, unpublished/replaced, or a malicious dependency/version is resolved, users could execute attacker-controlled code on the host performing the isolation checks.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.