Security audit

Budget Builder

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent budgeting/reporting helper that reads QuickBooks financial data and writes local budget/report files, with no evidence of hidden or destructive behavior.

Install and run this only in a trusted environment with authorized QBO access. The generated Excel files and .cache/budget-builder JSON files can contain sensitive company financial data, so protect or clean them up according to your retention policy; pin dependencies before production use.

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

Note

Location: SKILL.md:263
Finding: Unpinned Third-Party Dependency Installation
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

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
Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

Missing User Warnings

Medium

Category: Not specified by scanner
Confidence: 91% confidence
Finding: The skill does access sensitive financial data from QuickBooks Online and persists budget and CDC artifacts to local cache files, but the surfaced usage/description does not clearly warn users about that data flow or local retention. This can lead to accidental exposure of financial information on shared machines, developer workstations, or backups because users may invoke the skill without understanding where sensitive data is stored.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.