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Security audit

Responsive Layout

Security checks for vulnerabilities and agentic risk

Overview

This is a documentation-only responsive layout guidance skill with no code execution, persistence, credential access, or hidden behavior found.

This skill is reasonable to install for responsive frontend layout guidance. Be aware that its trigger description is broad, so it may be invoked for many responsive UI discussions, but the packaged content is limited to documentation and checklists.

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
  • 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 (7)

Skill Enumeration

Medium
Category
Agent Snooping
Confidence
80% confidence
Finding

Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Content

Scanner excerpt · README.md (reported line 10)May include surrounding context.

md
- ID: `fec-responsive-layout`
- Category: `design-ui`
- Version: `2.9.0`
- Source: `skills/fec-responsive-layout/SKILL.md`

## Description

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

Line L14 says to use the skill when "designing, implementing, or reviewing responsive frontend layouts" and then lists many related topics, but it does not define specific trigger phrases, boundaries, or exclusion cases. This broad natural-language scope could cause the skill to activate during ordinary frontend discussions rather than only when explicitly requested.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The trigger description is very broad and covers many common frontend activities, which can cause the skill to activate outside its intended scope. Overbroad activation can steer unrelated tasks into this skill's procedure and references, increasing the chance of incorrect guidance, tool misselection, or prompt-scope interference in agent workflows.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The description is broadly scoped and includes many common frontend activities such as designing, implementing, and reviewing layouts across devices. In agent-routing contexts, overly broad trigger language can cause the skill to activate for unrelated or only partially related tasks, increasing the chance of incorrect delegation, prompt-surface expansion, or interference with more appropriate skills.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The description explicitly specifies 'Chinese triggers include ...' but does not indicate that multilingual or Chinese-specific behavior is optional, user-selected, or required by a regional scope. This creates a locale-specific policy concern because the skill embeds language handling assumptions without documenting user choice or justification.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
78% confidence
Finding

The text explicitly states 'Chinese triggers include ...' but does not clarify that language matching is optional or that other locales are equally supported. This can be interpreted as a locale-specific activation policy without documented opt-in or justification.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
24% confidence
Finding

SQP-3 only applies to natural-language policy violations such as forcing a specific language or locale without opt-in. This file discusses responsive layout guidance and does not clearly impose a user-facing language or locale policy, so evidence for a violation is weak.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.