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Security audit

Feishu Daily Report

Security checks for vulnerabilities and agentic risk

Overview

This is a local daily/weekly report generator with limited file read/write behavior and no evidence of hidden execution, persistence, credential access, or data exfiltration.

Install this if you want a Chinese-oriented local Markdown daily/weekly report generator. Review the scripts before using user-supplied output paths, and be aware that the promotional links in the skill text are informational links, not required for operation.

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
  • 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 (5)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

The skill description and usage instructions are entirely in Chinese and present Chinese trigger phrases and output expectations without offering a language or locale choice. This can constitute a language-policy violation when the skill implicitly requires a specific language without user opt-in or documented justification.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The listed triggers include generic phrases like “写周报” and “汇总工作”, which are common requests in everyday work conversations and may cause unintended invocation. The README does not define scope boundaries, required context, or negative examples clarifying when the skill should not activate.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

This code file contains natural-language strings such as the module docstring and CLI descriptions exclusively in Chinese. Under the policy, forcing a specific language without user opt-in is a natural-language policy violation unless the locale restriction is explicitly justified, which is not present here.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

The markdown includes Chinese-language branding and marketing text at the end of the skill file. Because the skill otherwise targets general report generation and does not state that it is China-specific or provide a language/locale option, this creates a natural-language locale policy concern.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

This Python file contains natural-language docstrings, comments, CLI descriptions, and output messages entirely in Chinese, which imposes a specific language/locale on users without any opt-in or alternative. The policy explicitly calls for flagging language or locale constraints when the skill does not offer user choice or document a justified regional limitation.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.