Security audit

Jest Config Validator

Security checks for vulnerabilities and agentic risk

Overview

This skill is a local Jest configuration validator that reads user-directed config files and reports lint-style findings without network access, persistence, or data mutation.

Install this if you want a local Jest config linting helper. It will read the config file path you pass to it and may also inspect same-directory Jest/package config files to detect conflicts; it does not appear to send data out or modify files.

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

Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (10)

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 14)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 17)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 20)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 23)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 26)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 29)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Ae1

High

Category: analysis-evasion
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected
Content: Scanner excerpt · SKILL.md (reported line 32)May include surrounding context.
md
python3 scripts/jest_config_validator.py validate jest.config.js

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 70% confidence
Finding: Without declared permissions the skill's intent is opaque and cannot be validated.
Content: No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium

Category: Not specified by scanner
Confidence: 85% confidence
Finding: The manifest emphasizes validating a given jest.config.ts/js/json or Jest configuration in package.json. The implementation performs directory-level discovery and opens sibling files to detect multi-config situations, adding behavior beyond validating the specified file itself.
Content: No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium

Category: Not specified by scanner
Confidence: 92% confidence
Finding: The manifest describes a skill for validating Jest configuration files for deprecated options, transform conflicts, and best practices. Accessing process environment state via CI/CONTINUOUS_INTEGRATION introduces a host-environment capability unrelated to parsing or linting the target config file, and affects findings based on external machine state rather than the config alone.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.