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Security audit

Send Doc To Feishu

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Feishu document-sharing workflow, but users should notice that local files may be uploaded to Feishu cloud storage and shared as links.

Before installing, make sure users understand that local documents can leave the local machine by being uploaded to Feishu Drive and then shared as links. Confirm the file and recipient before upload, especially for confidential documents.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The trigger phrases are very broad (for example, common phrases like '发给我' or '发到飞书') and can match routine user requests outside a clearly scoped document-sharing intent. This can cause the skill to activate unexpectedly and initiate uploads or sharing flows involving local documents, increasing the chance of unintended data disclosure or confusing execution in the wrong context.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The workflow instructs uploading local files to Feishu cloud storage and sending direct links, but it does not prominently warn the user that local documents leave the local environment and become cloud-hosted/shareable resources. Without explicit disclosure and consent, users may unintentionally expose sensitive files to third-party storage or broader audiences than expected.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.