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Security audit

Five Star Reviewers

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed multi-agent code review workflow that reads repository diffs and writes review reports, with no evidence of hidden, destructive, credential, network, or persistence behavior.

Install this if you want a heavier code-review workflow that may inspect repository context, launch five reviewer agents, and add Markdown reports to your repo. Review the generated docs/five-star-reviewers files before committing them.

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
  • Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (3)

Memory Manipulation

High
Category
Memory Poisoning
Confidence
90% confidence
Finding

Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.

Content

Scanner excerpt · references/reviewer-rubric.md (reported line 23)May include surrounding context.

md
### Promote to p0 when
- the change is likely to produce incorrect behavior
- an edge case can silently break a key path
- a missing failure guard can corrupt state or produce a bad external result

## `star_architecture`

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The skill description is broad enough to be auto-invoked for many generic review requests, which can cause the agent to trigger unexpectedly and perform substantial actions such as launching multiple sub-agents and inspecting repository state. In this skill, that risk is amplified because invocation can cascade into file-writing behavior and broad repository analysis without a narrowly scoped user confirmation step.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill directs the agent to create multiple markdown files inside the current repository, but does not require explicit user consent or a warning that running the skill will modify the working tree. This can silently alter a user's repo, create noisy diffs, interfere with CI or review workflows, and be especially problematic when the skill is auto-invoked from broad review-related prompts.

Content

No source excerpt is available for this finding.