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Security audit

Flutter Dev Skill

Security checks for vulnerabilities and agentic risk

Overview

This is a Chinese-language Flutter reference skill with broad routing triggers but no hidden execution, exfiltration, persistence, or privileged behavior.

Install this if you want Chinese-language Flutter development help. Be aware that it may trigger on broad Dart/UI terms and may answer in Chinese even when another language would be preferable.

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 (15)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

The skill is presented entirely in Chinese and does not state whether it can adapt to the user’s preferred language. In multi-language environments, this can cause mismatched responses, user confusion, and accidental disclosure of guidance in an unusable language, which degrades safe and reliable operation rather than creating a direct security compromise.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The trigger description is broad enough to activate on very common terms such as “Flutter”, “Dart”, “移动开发”, and “跨平台” without clear scoping boundaries. This can cause the skill to hijack unrelated conversations, leading to inappropriate invocation, reduced routing integrity, and possible overexposure of the skill’s instructions or content in contexts where it was not intended.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The trigger list is extremely broad and includes generic developer and UI terms such as 'Animation', 'Provider', '性能优化', and 'Material Design', which can cause the skill to activate outside narrowly intended Flutter-specific contexts. Overbroad activation can route unrelated user requests into this skill, increasing prompt hijacking risk, answer corruption, and unintended policy or behavior overrides from the skill content.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
98% confidence
Finding

The output-format section hard-codes a Chinese-only response style and prescribes a rigid reply structure without checking the user's language preference. This can degrade safe operation by overriding user intent, causing confusing responses, and increasing the chance that higher-priority system behavior is displaced by skill-local instructions.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The entire document is written in Chinese and provides no indication that language selection is optional or limited to a China-specific or Chinese-only context. Under the policy, forcing a specific language without user opt-in is a natural-language locale violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The file’s description and all instructional content are written exclusively in Chinese, with no indication that the language is optional or that the skill is region-specific. Under the policy, forcing a specific language without user opt-in is a natural-language locale violation.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/material-3.md (reported line 766)May include surrounding context.

md
- [Material Design for Flutter](https://flutter.cn/ui/design/material)
- [Material 3 Gallery](https://github.com/flutter/samples/tree/main/material_3_demo)
- [Material 3 Umbrella Issue](https://github.com/flutter/flutter/issues/91605)
- [ThemeData API](https://api.flutter.dev/flutter/material/ThemeData-class.html)
- [ColorScheme API](https://api.flutter.dev/flutter/material/ColorScheme-class.html)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/material-3.md (reported line 767)May include surrounding context.

md
- [Material Design for Flutter](https://flutter.cn/ui/design/material)
- [Material 3 Gallery](https://github.com/flutter/samples/tree/main/material_3_demo)
- [Material 3 Umbrella Issue](https://github.com/flutter/flutter/issues/91605)
- [ThemeData API](https://api.flutter.dev/flutter/material/ThemeData-class.html)
- [ColorScheme API](https://api.flutter.dev/flutter/material/ColorScheme-class.html)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The file description and body are written in Chinese, and the skill does not indicate that language selection is optional or that the locale restriction is intentional for a region-specific audience. Under the policy rule, forcing a specific language without user opt-in can be 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
95% confidence
Finding

This markdown file contains its description and instructional content in Chinese, and there is no indication that the user can opt into another language or that the skill is intentionally limited to a Chinese-language audience. Under the policy, 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 contains all instructional content in Chinese and does not indicate that users may choose another language or that the skill is intentionally limited to a Chinese-language audience. Under the language/locale policy, forcing a specific language without user opt-in is a natural-language policy concern.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The file description and all user-facing instructional content are written exclusively in Chinese, with no indication that other language options are available. Under the policy scope for natural-language violations, this can be considered a locale/language constraint that is not documented as optional or region-specific.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

This markdown file presents the skill description in Chinese and continues with Chinese-language instructional content, which can constitute a language policy issue when no user opt-in or locale scope is stated. The file does not indicate that it is intended only for Chinese-speaking users or provide an alternative language option.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest description is written entirely in Chinese, while the document title and code context are otherwise not clearly limited to a Chinese-only or region-specific audience. This creates a natural-language locale constraint without offering user choice or documenting that the skill is intentionally region-specific.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest description is written entirely in Chinese and the rest of the skill content is also Chinese-language instructional material, with no indication that users may choose another language or that the skill is intentionally limited to a Chinese-speaking context. This is a natural-language locale constraint that can conflict with organizational language-choice policies.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.