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Security audit

Premium Web UI Designer

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent frontend design helper with broad invocation wording but no hidden code, credential handling, persistence, or unrelated behavior.

Install this if you want Codex to apply stronger visual-design judgment to frontend work. Be aware it may be invoked broadly for web UI polish or redesign requests, so review proposed visual/code changes as you normally would before accepting them.

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
  • 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
95% confidence
Finding

The manifest description says to use the skill when the user asks for 'better frontend visual design,' 'layout refinement,' 'component polish,' or 'design critique,' which are broad phrases likely to match many ordinary web-development conversations. It does not provide tighter trigger constraints, exclusions, or negative examples to clarify when this skill should activate versus a more general frontend helper.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The default prompt uses a very broad invocation phrase tied to common redesign language ('redesign this web app', 'premium', 'modern', 'production-ready'), which can overlap with ordinary user requests and cause the skill to activate in situations beyond explicit user intent. This increases the chance of prompt-routing abuse or unintended delegation, especially when combined with implicit invocation.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

Enabling allow_implicit_invocation without defined trigger constraints allows the platform to invoke this skill based on loosely matching user requests. In a broadly scoped design skill, this can lead to overbroad activation, unexpected context capture, and routing of user tasks into this skill without sufficiently clear consent or specificity.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.