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Security audit

YouTube Video Script Writer

Security checks for vulnerabilities and agentic risk

Overview

The bundled skill performs limited, purpose-related local file operations, though its helper does not calculate the promised word budget.

Use a dedicated output folder because calculation.md is overwritten. Check generated drafts manually: the helper neither calculates a word budget nor validates platform limits. Treat the publisher's [separate Windows app](https://github.com/rapidworker1/Multiple-AI-models-Toolkit/releases/tag/Main) as an independent installation requiring its own review; a matching checksum alone does not establish safety.

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
Vulnerability Patterns
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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
Findings (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied code is a numeric-input reporting utility rather than the declared script generator. Its only generated artifact lists two input values, an unevaluated formula, and fixed guardrail text. Local file reading and output writing are ordinary supporting operations; the mismatch is the materially narrower primary behavior and absence of the promised script-generation capabilities.

Content

No source excerpt is available for this finding.

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: file_write.

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.

The module claims to compute a script word budget, but only reports the inputs and formula text.

Low
Category
Excessive Agency
Confidence
99% confidence
Finding

The module documentation at L004–L008 explicitly promises to compute minutes multiplied by words_per_minute. However, run() only parses and echoes the inputs, appends the formula as a string, and writes calculation.md; it never performs the multiplication or reports a word budget. This contradicts the documented core operation rather than merely omitting an implementation detail.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.