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Security audit

README Grader

Security checks for vulnerabilities and agentic risk

Overview

This skill only grades README text and does not include code, credential access, persistence, or hidden external fetching behavior.

Installers should expect README reviews to be produced primarily in Chinese and should paste README text directly rather than URLs. The skill is intentionally limited to text review and instructs the agent not to run commands or fetch external README content.

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 (5)

Anti-Refusal Statement

High
Category
Anti-Refusal
Confidence
84% confidence
Finding

The phrase 'Always respond in Chinese' is an absolute behavioral directive that can function as an anti-refusal or override-style instruction. Even though it is not overtly malicious, absolute mandates can interfere with system or user directions and normalize instruction patterns that weaken safe priority handling.

Content

Scanner excerpt · SKILL.md (reported line 51)May include surrounding context.

text

**CRITICAL INSTRUCTIONS:**
- Always respond in Chinese, as requested by the user's base rules.
- Be objective, constructive, and encouraging.
- The user MUST provide the **raw README text** in their prompt.
- **Do NOT** attempt to fetch README files via `curl`, `gh api`, or by accessing external URLs (e.g., `https://github.com/...`). Fetching external, untrusted content at runtime poses a security risk (indirect prompt injection) and is strictly prohibited.

Credential Access

High
Category
Privilege Escalation
Confidence
60% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · evals/evals.json (reported line 7)May include surrounding context.

json
"expected_output_includes": ["评分报告", "评分详情", "改进建议", "总分", "使用指南", "优化示例", "贡献与社区"]
  },
  {
    "input": "请给这段 README 打个分并给出具体改进建议:\n# kubecm\nKubeConfig Manager\n\n## Install\nbrew install kubecm\n\n## Usage\nkubecm add -f kubeconfig",
    "expected_output_includes": ["评分报告", "kubecm", "改进建议", "总分", "优点", "贡献与社区"]
  },
  {

Credential Access

High
Category
Privilege Escalation
Confidence
60% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · evals/evals.json (reported line 7)May include surrounding context.

json
"expected_output_includes": ["评分报告", "评分详情", "改进建议", "总分", "使用指南", "优化示例", "贡献与社区"]
  },
  {
    "input": "请给这段 README 打个分并给出具体改进建议:\n# kubecm\nKubeConfig Manager\n\n## Install\nbrew install kubecm\n\n## Usage\nkubecm add -f kubeconfig",
    "expected_output_includes": ["评分报告", "kubecm", "改进建议", "总分", "优点", "贡献与社区"]
  },
  {

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

Line L22 specifies that the skill provides its review 'primarily in Chinese', which imposes a language preference in the skill description. Under the policy, forcing a specific language without offering user choice or documenting justified locale constraints is a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The skill hard-codes a Chinese-only response requirement regardless of the user's explicit language preference. This can override user intent and higher-level application behavior, creating policy misalignment and reducing transparency about how outputs are controlled.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.