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Security audit

date-utils

Security checks for vulnerabilities and agentic risk

Overview

This is a local date/time utility skill, and the reviewed artifacts do not show hidden access, persistence, network activity, or destructive behavior.

Installers should treat this as a simple local utility. The main caveat is accuracy: review the toISOString behavior before relying on it for timezone-sensitive logs, audit records, or API timestamps, because it does not emit a standard UTC ISO string.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The description says to use the skill whenever you need to 'format, parse, compare, or manipulate dates and times,' which is a very broad condition that could overlap with many ordinary requests involving dates. The file does not provide explicit trigger phrases, boundaries, or negative examples clarifying when this skill should or should not activate.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The comment says "Convert to ISO string (local time)", which implies behavior comparable to standard ISO serialization. However, the function just formats the date as 'YYYY-MM-DDTHH:mm:ss.SSS' without timezone designator or UTC conversion, so it does not produce a true ISO string like Date.prototype.toISOString(). This is an active documentation/intent mismatch that could mislead callers about timestamp semantics.

Content

No source excerpt is available for this finding.

Vague Triggers

Low
Category
Not specified by scanner
Confidence
83% confidence
Finding

The description says the package 'Provides date and time manipulation operations for working with dates,' which is a very general capability statement without any explicit trigger phrases, scope limits, or exclusion conditions. In a manifest file, this kind of broad wording can make it unclear when the skill should activate versus when other general-purpose skills should handle the request.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.