Back to skill

Security audit

Corecoder

Security checks for vulnerabilities and agentic risk

Overview

This is a general coding-assistant skill with disclosed coding workflows, command use, subtask spawning, and local task logging, with no artifact-backed evidence of deception or exfiltration.

Before installing, be aware that this skill is intended for Chinese-language coding workflows, can run commands and spawn subtasks as part of development work, and keeps local memory logs of coding-task outcomes. Avoid including secrets in task descriptions or code comments that could be captured in those logs.

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 (4)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
71% confidence
Finding

The natural-language instructions and examples are entirely in Chinese, which effectively imposes a specific language on users. There is no indication that this is optional, user-selected, or required for a region-specific purpose.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The activation criteria are very broad and match common software-development requests such as writing code, fixing bugs, refactoring, and code review. This increases the chance the skill will auto-activate in situations where the user did not explicitly intend to invoke its behavior, including its logging and command-execution workflows, which can lead to unintended actions and expanded attack surface.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The skill states that every coding task is recorded to memory/YYYY-MM-DD.md, but it does not prominently warn users before activation that their prompts, file names, modifications, and rationale may be persistently stored. In a coding context, this can capture sensitive source code details, secrets, internal paths, or proprietary project information without informed consent.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

The package description is written solely in Chinese, which creates an implicit language constraint without any indication of user opt-in or alternative locale support. Under the policy, language-specific behavior should either offer a choice or clearly document a justified regional restriction.

Content

No source excerpt is available for this finding.