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Security audit

vestige

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed local memory and guard wrapper for Vestige, with persistence that matches its stated purpose.

Install this only if you want a separate local Vestige MCP memory store. Avoid saving secrets or confidential content, consider using a per-project --data-dir for containment, and review the upstream npm package before global installation.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (4)

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · README.md (reported line 65)May include surrounding context.

bash
vmem recall <tag-or-id>            # exact handle
vmem save "text" [tag]             # smart_ingest, optional tag
vmem walk <failure-memory-id>      # causal_walk from a logged write
vmem receipt <memory-id>           # receipt get
vmem selftest

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 70)May include surrounding context.

bash
vmem recall <tag-or-id>            # exact handle
vmem save "text" [tag]             # smart_ingest, optional tag
vmem walk <failure-memory-id>      # causal_walk from a logged write
vmem receipt <memory-id>           # receipt get
vmem selftest

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

In the save command, the script takes arbitrary user content and sends it to the smart_ingest tool via vestige-mcp. While the usage text names the command, there is no explicit warning, confirmation, or comment disclosing that supplied content will be transmitted to another process/service for storage.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
82% confidence
Finding

This markdown file describes that the skill 'saves that chain to memory' and records repository history, but the user-facing description does not explicitly warn that using these tools persists data locally and could store sensitive project information if misused. Although there is a warning not to save secrets, the broader persistence/privacy impact of writing session and codebase-related data is not clearly disclosed as a caution.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.