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Security audit

Cloudflare R2

Security checks for vulnerabilities and agentic risk

Overview

The skill is coherent for Cloudflare R2 management, but its first-time setup asks users to pipe a remote installer directly into a shell before using a tool that can change or delete cloud storage data.

Review the OOMOL CLI installer before running it, prefer a verified package or signed release if available, and confirm exact bucket, object, and payload details before allowing any write or destructive R2 action.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • 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 (2)

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The skill recommends piping a remotely fetched installer script directly into a shell (curl ... | bash), which creates a supply-chain and remote code execution risk if the hosting endpoint, transport, or script contents are compromised. Because this appears in a first-time setup path for a command-not-found condition, an agent or user following the instruction could execute unreviewed code on the local system.

Content

Scanner excerpt · SKILL.md (reported line 94)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The description says to use this skill for "ANY Cloudflare R2 request" and "Whenever a task involves Cloudflare R2," which is extremely broad and lacks scope boundaries or exclusion examples. For a markdown/manifest file, this creates an ambiguous activation condition that could overlap with many loosely related tasks instead of clearly defining when the skill should or should not be invoked.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.