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Security audit

finet-news-lite

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small, disclosed Finet financial-news fetcher with no credential access, persistence, local indexing, or data mutation.

Install this if you want a simple live Finet news fetcher. Leave FINET_API_HOST unset unless you intentionally trust the replacement host, since that variable changes where outbound requests are sent.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
91% confidence
Finding

The skill documentation indicates network access to an external host and support for overriding the API host via an environment variable, but it does not declare any explicit tool scope or permissions. In agent environments, this creates an authorization gap where the skill's effective capabilities are broader than its declared contract, increasing the risk of unexpected outbound requests, policy bypass, or misuse through host redirection.

Content

No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill’s stated purpose is to fetch news from a fixed Finet endpoint, but the FINET_API_HOST environment variable allows the destination host to be replaced with any arbitrary URL. In environments where users can influence environment variables or where this skill runs with network access, this expands the skill into a generic outbound HTTP client and can enable unintended data retrieval, SSRF-like access to internal services, or exfiltration to attacker-controlled infrastructure.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
92% confidence
Finding

The module docstring and CLI descriptions are entirely in Chinese, which imposes a specific language on users without offering any alternative or opt-in. The policy specifically calls for flagging language or locale constraints when they are forced without user choice.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.