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Security audit

Naver Stock

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Naver Finance market-data lookup tool with expected external queries and no evidence of hidden persistence, credential access, or destructive behavior.

Install only if you are comfortable with stock names, tickers, and exchange-rate queries being sent to Naver Finance. Avoid entering confidential watchlists, private notes, or proprietary identifiers as free-text queries.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (4)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

User-supplied queries are sent directly to external Naver endpoints, and this file provides no notice that user input will leave the local environment. While expected for a market-data lookup skill, undisclosed transmission of user-entered text can create privacy risk if users submit sensitive or proprietary symbols, notes, or identifiers by mistake.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill sends user-derived stock identifiers or resolved Reuters codes to additional Naver Finance endpoints without explicit disclosure. Although necessary for functionality, this still exposes user interest patterns and query data to a third party, which is a legitimate privacy concern in a finance-related context.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The manifest says the skill fetches real-time stock prices using Naver Finance, but this code implements a separate exchange-rate retrieval path via Naver's market index API. In main(), user inputs like USD/JPY/EUR/CNY are explicitly mapped to FX codes and returned as currency rates rather than stock prices, which expands the behavior beyond the described stock-only scope.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
86% confidence
Finding

The exchange-rate mapping and generated display name include Korean-only strings such as currency aliases and the output suffix for exchange rates. This imposes a specific language/locale in the user-facing behavior without any opt-in or alternative localization path.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.