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Security audit

Self Learning Coach Deep v0.1.2

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed learning-coach workflow that reads user-provided materials with read-only access and creates lesson files, with no evidence of hidden execution, exfiltration, or system persistence.

Install this if you want a structured learning workflow that can read materials you provide and create lesson files. Before using it with private Feishu or local documents, confirm you are comfortable granting read-only access and having summarized lesson artifacts stored in the workspace.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (5)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill description uses very broad activation cues covering generic learning, research, business analysis, and training requests. In agent environments that auto-route by description, this can cause the skill to trigger for many ordinary user requests and then perform file creation, source gathering, and internal-document handling that the user may not have specifically intended.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 81)May include surrounding context.

md
- Base or bitable material: read table fields and records with read-only base access.
- File, image, or attachment: try download, OCR, or parsing before treating it as OAuth.

If authorization is needed, ask through the tool's normal minimum read-only flow. Do not ask the user to choose technical permission options, do not request write/admin scopes for learning, and batch the minimum read-only permissions when the tool supports it.

User-facing authorization message should stay short:

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

Both the short description and default prompt are written only in Chinese, and the prompt directs the interaction flow in Chinese without indicating that other languages are supported. This can constitute a language-policy issue because the skill appears to enforce 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
89% confidence
Finding

The default prompt contains a broad activation phrase and directly instructs the agent to invoke the skill without clear gating conditions, which can cause over-triggering or unintended routing. In a skill that performs deep research, lesson generation, and source-grounded output, this increases the chance of the agent entering a high-authority workflow when the user did not explicitly request it, potentially amplifying prompt injection from supplied materials or causing unnecessary data access.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
91% confidence
Finding

The skill instructs the agent to create and update workspace files such as lesson HTML, LEARNING_STATUS.md, and LEARNING_SOURCES.md without requiring an upfront warning that user files will be modified. This creates a consent and integrity risk because the agent may alter the workspace, leave persistent artifacts, or overwrite prior learning records when the user only asked for conversational help.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.