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Security audit

Reminder Agent

Security checks for vulnerabilities and agentic risk

Overview

This is a simple reminder-formatting skill with minor over-triggering risk but no evidence of hidden or harmful behavior.

Before installing, be aware that the skill may activate on broad scheduling language and may misread ambiguous lunar-calendar tokens. Review or install the referenced lunar-convert skill separately if you plan to use lunar-date reminders.

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 (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill's trigger scope is intentionally very broad, including generic scheduling/reminder phrasing and even any message describing a future task with a time. This can cause accidental invocation on messages that are not actually reminder-creation requests, leading to misrouting, unintended data transformation, or downstream actions being prepared without clear user intent.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The lunar-date detection uses very short and ambiguous tokens such as 'âm', 'AL', and similar fragments, which are prone to matching unrelated user text. That can spuriously invoke the lunar-convert skill, increasing the chance of incorrect date conversion, unintended skill chaining, and user-confusing outputs.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
90% confidence
Finding

The description states the skill operates 'in any language (Vietnamese or English),' which effectively limits supported languages to two without user opt-in or a documented justification. This is a language/locale policy concern because it imposes a specific language scope rather than offering a user choice or clearly stating region-specific rationale.

Content

No source excerpt is available for this finding.