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Security audit

ve-exchange-rates

Security checks for vulnerabilities and agentic risk

Overview

This skill fetches Venezuelan exchange-rate data from disclosed public sources and does not show hidden access, persistence, credential use, or unrelated behavior.

Install this if you are comfortable with the skill making live web requests to BCV, Binance P2P, and a fallback exchange-rate API. Treat the output as market data that can fluctuate and verify rates independently before making financial decisions.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (4)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
90% confidence
Finding

The skill documentation indicates network access to external domains (BCV, Binance P2P, and a fallback API) but does not declare any tool scope or permissions boundaries. This creates an authorization and governance gap: an agent may invoke network-capable code without explicit least-privilege constraints or user-visible approval semantics.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% 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 · scripts/get_rates.py (reported line 12)May include surrounding context.

python
BCV_URL = "https://www.bcv.org.ve/"
BINANCE_URL = "https://p2p.binance.com/bapi/c2c/v2/friendly/c2c/adv/search"
FALLBACK_URL = "https://api.exchangerate-api.com/v4/latest/USD"
UA = "Mozilla/5.0"

Vague Triggers

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The description says to use the skill when the user asks for 'exchange rates in Venezuela,' which is broader and less specific than the other listed triggers. Without clearer scope boundaries or exclusion examples, this could cause unintended invocation for generic Venezuela-related exchange-rate questions not specifically about the BCV/USDT comparison use case.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
91% confidence
Finding

This code file emits all user-facing messages in Spanish, including headings, warnings, and status output. Under the policy rule for natural-language violations, forcing a specific language without user opt-in is a reportable issue unless the locale restriction is explicitly justified.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.