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Security audit

Feishu Cards

Security checks across malware telemetry and agentic risk

Overview

The skill does what it says by sending Feishu cards, but it includes built-in Feishu app credentials that can be used without the installer configuring their own account.

Review before installing. Prefer a version that removes embedded Feishu credentials and fails unless you explicitly set your own FEISHU_APP_ID and FEISHU_APP_SECRET. Confirm recipient IDs carefully and avoid sending secrets, personal data, or regulated business content unless you are authorized to transmit it to Feishu.

SkillSpector

By NVIDIA
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 (2)

Missing User Warnings

Medium
Confidence
93% confidence
Finding
The skill is explicitly designed to send messages to an external Feishu service and mentions use of environment-based credentials, but it provides no warning that user-provided content and recipient identifiers will be transmitted off-platform. In an agent context, this can cause unintended disclosure of sensitive information or unauthorized outbound messaging because users may not realize the privacy and data-transfer implications.

Missing User Warnings

High
Confidence
99% confidence
Finding
The script embeds default Feishu APP_ID and APP_SECRET values and then automatically uses them to request an access token and send network requests. Hardcoded credential fallbacks are dangerous because they expose reusable secrets in source code, enable unintended use of a shared account, and can lead to credential abuse or unauthorized message sending if the code is copied or published.

VirusTotal

65/65 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.