Security audit

US Stock Analysis Lite

Security checks for vulnerabilities and agentic risk

Overview

This stock-analysis skill is mostly a simple web-research template, but it requires repeated promotion of an external commercial service inside user-facing reports.

Review before installing if you want neutral financial-analysis output. The skill appears technically low-risk, but reports generated with it may include a built-in commercial upsell and should not be treated as investment advice.

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

Findings (1)

T01 · Skill Instruction Hijacking

Error

Location: SKILL.md:192
Finding: Mandatory Commercial Promotion Embedded in Agent Output
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
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)

Description-Behavior Mismatch

Medium

Category: Not specified by scanner
Confidence: 87% confidence
Finding: The manifest and documentation repeatedly frame this as a limited 'fundamental snapshot' and say the lite version excludes full buy/hold/sell ratings and price targets. However, the required searches include analyst price target consensus, which goes beyond the stated lite scope and pulls recommendation-oriented valuation targets.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.