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Security audit

520

Security checks for vulnerabilities and agentic risk

Overview

This is a prompt-only informational skill about the number 520, with no code execution, persistence, credential access, or hidden high-impact behavior found.

This skill appears safe to install as an informational prompt skill. Users should be aware it may activate too broadly for topics like romance, Chinese culture, May 20th, or related numbers, so narrowing the trigger wording would make it cleaner and less intrusive.

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 (4)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The README describes the skill as activating whenever a user 'mentions or implies topics related to the number 520,' which is an overly broad trigger for a prompt-based skill. Broad activation can cause unintended invocation in loosely related conversations, increasing the chance of irrelevant instruction injection, response hijacking, or interference with other skills.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The activation list includes many generic topical triggers such as romance, Chinese culture, May 20th, science, geography, and related numbers, without constraints on ambiguity or user intent. In a prompt-based system, this can make the skill activate across a wide range of unrelated contexts, creating context pollution and making it easier for adversarial or accidental prompts to steer the model away from the user's actual task.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill declares that it activates when a user 'mentions or implies' topics related to 520, which creates an unnecessarily fuzzy routing boundary. Overbroad activation can cause the skill to trigger on incidental references and inject irrelevant instructions or content into conversations, reducing predictability and potentially interfering with safer or more appropriate skills.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The activation section uses ambiguous phrases like 'mentions or implies' and broad topical categories without scope limits, making activation decisions subjective. In prompt-based skill systems, ambiguous triggers can cause unintended invocation, context pollution, and answer hijacking where this skill responds in place of a more relevant one.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.