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Security audit

Guaikei Kuaishou Rank Data Fetcher

Security checks across malware telemetry and agentic risk

Overview

This skill coherently fetches public Kuaishou search, creator-post, and comment data through a disclosed third-party API, with local result logging users should handle carefully.

Install only if you are comfortable sending Kuaishou keywords, profile or video URLs, and the GUAIKEI_API_TOKEN to guaikei.com. Treat generated logs as potentially sensitive research data and keep them out of source control or shared folders.

A.I.G

By Tencent
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

By NVIDIA
Vulnerability Patterns
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (2)

Description-Behavior Mismatch

Medium
Confidence
89% confidence
Finding
The package presents itself as a passive analytics and data-mining tool, but its exposed scripts also support posting and commenting actions. This mismatch can mislead users and reviewers about the skill's actual capabilities, increasing the risk of unexpected account activity, spam, or abuse when the package is installed or invoked.

Missing User Warnings

Medium
Confidence
87% confidence
Finding
The README states that all task results are automatically saved to the `logs/` directory, but it does not clearly disclose that fetched platform data, queried keywords, profile/video URLs, and potentially sensitive analysis targets will be written to local files. This creates a real data-handling and privacy risk because users may unknowingly persist operationally sensitive data on disk, where it can later be exposed through backups, shared workstations, or source-control mistakes.

VirusTotal

64/64 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

Detected: suspicious.exposed_secret_literal

File appears to expose a hardcoded API secret or token.

Critical
Code
suspicious.exposed_secret_literal
Location
SKILL.md:15