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Security audit

Jinjiancheng Family Skill

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed, markdown-only family and parenting advice skill with no hidden code, persistence, credential access, or destructive behavior.

Before installing, review the Chinese-language scope and consider pinning or otherwise verifying the npx installer and repository source. Treat the advice as a family decision framework, not as medical, psychological, legal, or financial professional guidance.

Vulnerability Patterns
  • Insecure DependenciesIntroduces malicious components through unsafe dependency sources
  • 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
Findings (1)

T08 · Insecure Dependencies

Warning
Location
README.md:118
Finding

Unpinned Third-Party Skill Installation Command

Content
View full analysis
Remediation
View remediation
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 (12)

Rp1

Medium
Category
MCP Rug Pull
Confidence
70% confidence
Finding

npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The README says '然后在 Codex / Claude Code 里这样触发' and provides natural-language examples like '用金渐成的视角看看我们家的育儿问题' and '帮我判断孩子这个阶段该抓什么' without defining exact trigger phrases, exclusions, or activation boundaries. These phrases overlap with normal conversational requests about family or parenting, which could cause unintended invocation of the skill.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest description mixes English with Chinese and the remainder of the skill instructions are written entirely in Chinese, with no indication that users may choose another language. This creates a locale/language constraint that is not documented as optional or justified as region-specific.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

This markdown file presents all user-facing scenarios and answers exclusively in Chinese, and it does not state that the skill is intended only for Chinese-speaking users or offer any language/locale choice. Under the policy rule, forcing a specific language without user opt-in 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
93% confidence
Finding

This markdown file presents the skill content entirely in Chinese while the surrounding repository context is otherwise English-labeled, and there is no natural-language indication that Chinese is required or that users may choose another language. Under the language/locale policy, forcing a specific language without user opt-in can be a policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

SQP-3 applies to all file types and covers natural-language policy violations such as forcing a specific language without user opt-in. This markdown file presents all substantive guidance only in Chinese and does not indicate that the user can choose another language or that the content is intentionally region-specific.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The file prescribes the skill's expression style in Chinese ('这个 Skill 的表达风格要稳'), and the rest of the document consistently defines the interaction style only in Chinese. This creates a natural-language locale constraint without any opt-in, user choice, or explanation that the skill is intended only for Chinese-speaking users.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

This JSON file contains only Chinese prompts and expected responses, implying the skill behavior is constrained to a specific language. The policy requires either user language choice/opt-in or a clearly documented and justified locale restriction, which is not present in this file.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
87% confidence
Finding

This markdown file presents all substantive guidance in Chinese and does not provide an opt-in, alternative language, or justification for restricting the content to that locale. Under the stated policy, forcing a specific language without user choice can be a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
91% confidence
Finding

This markdown file contains natural-language guidance that explicitly promotes '英语' as part of early-childhood development. Under the language/locale policy rule, forcing or prescriptively privileging a specific language without opt-in or contextual justification can be a policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The document content is written entirely in Chinese while the headings are in English, and there is no natural-language indication that the skill offers a language choice or that Chinese is a justified region-specific requirement. Per the policy, forcing a specific language without user opt-in is a locale/language policy concern.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
89% confidence
Finding

This markdown file presents all user-facing content in a single language and does not indicate that the skill is region-specific or that users may opt into Chinese. Under the stated policy, forcing a specific language without user choice can be a natural-language policy violation.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.