Security audit

Lingxi · GitHub Trending Daily Digest

Security checks for vulnerabilities and agentic risk

Overview

This skill does what it says: fetches GitHub Trending data, summarizes it, and optionally saves a daily markdown digest.

Before installing, be aware that scheduled use can create daily markdown files in ~/github-digest and that setting GITHUB_TOKEN gives the workflow access to your GitHub API quota. Use a token with minimal needed scope, or omit it if public Trending data is enough.

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

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
Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

Missing User Warnings

Low

Category: Not specified by scanner
Confidence: 88% confidence
Finding: The markdown explicitly states that scheduled runs will 'Save digest to ~/github-digest/YYYY-MM-DD.md', which is a file write affecting user data/storage. The description does not include any caution or user-facing warning about creating files or using disk space, so users may not realize the skill writes to their filesystem.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.