Security audit

supermap-wasi-geo

Security checks for vulnerabilities and agentic risk

Overview

This is a local SuperMap WebAssembly geometry tool with purpose-aligned file input/output and no evidence of hidden data access, persistence, or remote execution.

Install only if you need local GIS geometry processing and are comfortable trusting the bundled SuperMap WebAssembly binary. Use it on intended GeoJSON files, review outputs for multipart and MultiPoint edge cases, and expect Chinese-language documentation and messages.

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

Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration

Findings (11)

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 78% confidence
Finding: The skill documentation defines installation and execution steps for a Node.js/WASM CLI and static analysis detected capabilities including environment access, file reads, network, and shell, but the skill declares no explicit tool scope such as permissions or allowed-tools. In an agent setting, this can lead to overbroad execution authority where the agent may invoke shell commands or access files beyond what is necessary for geometry processing, increasing the chance of unintended data exposure or command execution.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

Category: Not specified by scanner
Confidence: 87% confidence
Finding: The package description is written in Chinese and does not indicate that language selection is configurable or that the skill is intentionally limited to a Chinese-speaking audience. This can violate language/locale policy expectations when users are not given an opt-in or explicit locale justification.
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 presents all usage instructions, examples, and warnings only in Chinese. Under the natural-language policy rules, forcing a specific language without user opt-in is a policy concern unless the locale restriction is explicitly justified.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

Category: Not specified by scanner
Confidence: 94% confidence
Finding: SQP-3 applies to all file types and covers language or locale policy violations in natural-language content, including comments and string literals in code. This module uses Chinese throughout its developer-facing documentation and messages, which effectively forces a specific language without any opt-in or justification.
Content: No source excerpt is available for this finding.

Intent-Code Divergence

Medium

Category: Not specified by scanner
Confidence: 91% confidence
Finding: L344-L350 的注释将该函数描述为把 GeoJSON 对象转换为对应的 WASM 几何对象，但在 L409-L413，'MultiPoint' 被转换为 GeoLine 并通过 AddPart2 写入，这不是语义上对应的点集合几何。该实现会让声明的 GeoJSON 几何类型与实际底层几何类型不一致，属于文档/意图与代码行为相背。
Content: No source excerpt is available for this finding.

Intent-Code Divergence

Medium

Category: Not specified by scanner
Confidence: 88% confidence
Finding: L420-L426 将函数描述为通用的 WASM 几何到 GeoJSON 转换；但在 L437-L452 中，即使读取了多个 part 到 outlines，最终仍始终返回 { type: 'LineString', coordinates: outlines[0] }，忽略其余部分。对多段线而言，这不是忠实的 GeoJSON 转换，属于注释承诺与实际行为不符。
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

Category: Not specified by scanner
Confidence: 91% confidence
Finding: This code file contains natural-language documentation that forces a specific language/locale context through Chinese-only comments and function descriptions. Under the policy, language constraints should be user-selectable or explicitly justified; no such opt-in or justification is present here.
Content: No source excerpt is available for this finding.

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · scripts/wasm/UGCWasmAll.js (reported line 5)May include surrounding context.
js
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 ...[truncated 28 chars]

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · scripts/wasm/UGCWasmAll.js (reported line 5)May include surrounding context.
js
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 ...[truncated 28 chars]

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · scripts/wasm/UGCWasmAll.js (reported line 5)May include surrounding context.
js
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 ...[truncated 28 chars]

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 82% confidence
Finding: This file's natural-language text is written exclusively in Chinese in the header comment and throughout the inline documentation, with no indication that the skill is region-specific or that users may choose another language. Under the stated policy, forcing a specific language without opt-in is a natural-language policy concern.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.