Security audit
Onshape Featurescript
Security checks for vulnerabilities and agentic risk
Overview
This skill is a simple FeatureScript writing aid for Onshape CAD work and does not request sensitive access or run code locally.
Review generated FeatureScript before pasting it into Onshape, especially CAD operations that could create invalid or inefficient geometry. The main practical issue is packaging quality: malformed frontmatter and a referenced font that is not included may reduce usability, but I found no artifact-backed security concern.
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
- 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
Static analysis
No suspicious patterns detected.