Security audit

Cn Number Formatter

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple local number-formatting helper with no evidence of hidden access, persistence, network activity, or destructive behavior.

Install this only if you are comfortable with Chinese documentation and a small promotional link in the README-style instructions. The executable code itself is a straightforward local formatter and does not show sensitive data access or persistence.

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 (1)

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 93% confidence
Finding: The user-facing description and usage section are presented only in Chinese, which imposes a specific language on users without any stated choice or opt-in. Under the policy for natural-language violations, forcing a language without user selection is reportable unless clearly justified or optional.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.