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Security audit

Code Executor

Security checks for vulnerabilities and agentic risk

Overview

This skill openly aims to run code, shell commands, local scripts, and package installs, but its authority is very broad and its safety controls are only documented, not implemented in the artifact.

Install only if you intentionally want a skill that can run arbitrary code and shell commands. Use it in a disposable, sandboxed environment with minimal file access, avoid running scripts from sensitive directories, and treat dependency installation as risky unless package versions and sources are controlled.

Vulnerability Patterns
  • Insecure DependenciesIntroduces malicious components through unsafe dependency sources
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (3)

T09 · Insecure Skill Coding Practices

Error
Location
SKILL.md:22
Finding

Unrestricted Dynamic Code and Command Execution

Content
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Remediation
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T08 · Insecure Dependencies

Error
Location
SKILL.md:105
Finding

Unsafe Runtime Dependency Installation

Content
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Remediation
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T09 · Insecure Skill Coding Practices

Error
Location
SKILL.md:120
Finding

Documented Security Controls Lack Enforceable Implementation

Content
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Remediation
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Vulnerability Patterns
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The skill says the bot can write and execute code whenever it 'needs to do something that it doesn't have a skill for,' which is an extremely broad activation condition. In a code-execution skill, unclear triggers materially increase the chance of unsafe invocation on ordinary user requests, leading to unintended code generation and execution with filesystem or package-install side effects.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

Generic verbs like 'solve' and 'compute' overlap heavily with normal conversational requests, so the skill may activate for benign questions that do not imply consent to code execution. In this context, accidental activation is especially dangerous because the skill can generate scripts, run bash, and operate on files, turning ordinary prompts into execution flows.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
78% confidence
Finding

The manifest description is presented only in Spanish, which can imply a fixed language experience rather than offering the user's preferred language. The file does not indicate that the skill supports language selection or that Spanish is an intentional region-specific constraint.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.