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Security audit

List Virtualization

Security checks for vulnerabilities and agentic risk

Overview

This is a documentation-only frontend skill for list virtualization, with no hidden execution, persistence, credential access, or unrelated data handling.

Safe to install as a frontend guidance skill. Expect it to activate for large-list or scroll-performance discussions; users who want tighter routing may narrow the trigger text, but no sensitive access or hidden behavior was found.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (5)

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-list-virtualization`
- Category: `implementation-capability`
- Version: `2.9.0`
- Source: `skills/fec-list-virtualization/SKILL.md`

## Description

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

The invocation text is broad enough to match generic requests about scrolling or list performance, which can cause the skill to activate outside its narrow intended scope. Over-broad activation increases the chance that implementation guidance is injected into unrelated contexts, leading to poor routing, unintended capability exposure, or confusing agent behavior.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest description says 'Use when optimizing or reviewing large lists' and includes generic phrases like 'large list optimization' and 'scroll performance' without explicit boundaries or negative examples. These terms are broad enough to overlap with many ordinary frontend performance discussions, making unintended invocation more likely.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The manifest description says 'Use when optimizing or reviewing large lists' and then lists many related topics, but it does not define explicit trigger phrases, scope limits, or exclusion conditions. Terms like 'large lists' and 'scroll performance' are broad enough to overlap with common frontend discussions, which could cause unintended invocation.

Content

No source excerpt is available for this finding.

Vague Triggers

Low
Category
Not specified by scanner
Confidence
82% confidence
Finding

The manifest description says "Use when optimizing or reviewing large lists" and then lists many related topics, but it does not define clear boundaries or exclusion cases for when the skill should not activate. This broad phrasing may overlap with ordinary frontend review requests involving lists or performance, making invocation scope ambiguous.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.