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Security audit

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Security checks for vulnerabilities and agentic risk

Overview

The verdict is benign because the findings concern an install command and an unpinned CLI dependency, with no malicious behavior reported, though scanner coverage is incomplete.

The verdict is benign, not risk-free. Before installing, consider that the CLI version is unpinned and could change between runs. The Skillspector scan was partial: it analyzed both listed components, but reported unresolved references, so the evidence is incomplete.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • 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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The only supplied command is an installation operation, not a discovery operation supporting the declared purpose. Although installation could follow a recommendation, this chunk provides no discovery behavior or connection to SkillPicker. The placeholder identifier also means successful installation is not established.

Content

No source excerpt is available for this finding.

MCP server referenced without pinned version: 'npx skills'.

Medium
Category
MCP Rug Pull
Confidence
90% confidence
Finding

The command uses an unpinned npm CLI, not an MCP server, so the finding's classification is inaccurate but its dependency-integrity concern is valid. If installation is requested, npx may download and execute a changing version of the skills package; a compromised release could execute code with the user's privileges. Requiring an explicit installation request reduces unsolicited execution but does not address package integrity.

Content

No source excerpt is available for this finding.