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Security audit

7bu uploader

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple, disclosed image-upload helper for 7bu.top and does not show hidden, persistent, or unrelated behavior.

Before installing, understand that images you choose and the token you provide will be sent to 7bu.top. Use a token intended for that service and avoid uploading sensitive images unless you trust the provider's handling of them.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (1)

Natural-Language Policy Violations

Medium
Confidence
90% confidence
Finding
The manifest description and all user-facing instructions are written only in Chinese, including the trigger and usage example, with no indication that other languages are supported. This can violate language/locale policy when a skill implicitly requires a specific language without user opt-in or justification.

Static analysis

No suspicious patterns detected.