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Security audit

Upbit

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Upbit price lookup guide that uses a public market-data API and does not request credentials, persistence, or broad local access.

Install this if you want Codex to look up Upbit KRW crypto prices. It will need network access to Upbit when used, and users who prefer another language can ask for the same KRW market data to be explained or formatted in that language.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (3)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 17)May include surrounding context.

Fetch ticker data using Upbit's public API:

bash
curl -s "https://api.upbit.com/v1/ticker?markets=KRW-BTC"

Replace KRW-BTC with the desired market code (e.g., KRW-ETH, KRW-SUI, KRW-DOGE).

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 106)May include surrounding context.

Fetch ticker data using Upbit's public API:

bash
curl -s "https://api.upbit.com/v1/ticker?markets=KRW-BTC"

Replace KRW-BTC with the desired market code (e.g., KRW-ETH, KRW-SUI, KRW-DOGE).

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The example output is entirely in Korean and the skill does not state that language should be selected based on user preference. This can violate language/locale policy by implicitly requiring Korean output rather than offering a choice or tying the locale only to pricing currency.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.