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Security audit

war-room-checkpoint

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed, purpose-aligned checkpoint skill that advises on risk and escalation, with local audit logging and fail-open behavior users should understand.

Before installing, decide whether you are comfortable with checkpoint audit files being retained under ~/.claude and with workflows continuing if this checkpoint cannot run. For regulated or highly sensitive projects, configure the calling commands to fail closed or prompt the user on checkpoint failure, and periodically review or delete stored audit logs.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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
Findings (2)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The failure-handling section instructs calling commands to continue execution if checkpoint invocation fails, effectively converting a safety gate into fail-open behavior. In high-stakes review or escalation workflows, an attacker or fault condition could disable the checkpoint path and cause risky actions to proceed without reversibility assessment or required user confirmation.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill specifies persistent local logging of checkpoint context, affected files, confidence, and session details under user home directories, but does not require notice, consent, minimization, or redaction. In an agent setting, this can silently retain sensitive project metadata, filenames, architectural decisions, and workflow context that may expose confidential information to other local users, backups, or later tooling.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.