Security audit

3d Web Experience

Security checks for vulnerabilities and agentic risk

Overview

This skill provides coherent 3D web development guidance, with one minor dependency-safety note around a global npm install example.

Before installing, prefer using a pinned, project-local @gltf-transform/cli version instead of the global npm install example, and run asset-processing tools in a normal project environment without unnecessary secrets exposed.

A.I.G

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: SKILL.md:121
Finding: Unpinned Global npm Package Installation
Content: View full analysis
Remediation: View remediation
``` 3. Commit the generated lockfile and use `npm ci` in automated or reproducible environments. 4. Invoke the locally installed executable through an npm script or `npx --no-install`: ```bash npx --no-install gltf-transform optimize input.glb output.glb \ --compress draco \ --texture-compress webp ``` 5. Review the pinned package, transitive dependencies, provenance, and lifecycle scripts before use. 6. Use npm registry integrity checks and package provenance verification where available. 7. Run asset-processing tools in a restricted environment with no unnecessary credentials, secrets, or write access. ]]>

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