Security audit

Zip Archive API

Security checks for vulnerabilities and agentic risk

Overview

The skill is not clearly malicious, but it needs review because it treats archive compression and extraction as read-only and recommends unverified remote installer commands.

Review this before installing. Use it only for intended public file URLs or archives, confirm the exact action and inputs before running, treat returned transit URLs as containing user data, and prefer verified oo CLI installation steps over remote shell pipelines.

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
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

Findings (4)

External Script Fetching

High

Category: Supply Chain
Confidence: 98% confidence
Finding: The skill instructs users to install the CLI via a remote shell pipeline (curl ... | bash), which executes downloaded code without prior verification. If the install endpoint, transport, or distribution pipeline is compromised, this becomes an immediate arbitrary code execution path on the user's machine.
Content: Scanner excerpt · SKILL.md (reported line 56)May include surrounding context.

oo: command not found — install the oo CLI (other platforms: https://cli.oomol.com/install-guide.md):

bash
curl -fsSL https://cli.oomol.com/install.sh | bash # macOS / Linux

powershell

Description-Behavior Mismatch

Medium

Category: Not specified by scanner
Confidence: 95% confidence
Finding: The manifest claims this skill is for 'searching and reading data,' but the documented actions actually compress and extract archives, which are transformation operations and can move or expose user-supplied content. This mismatch can mislead an agent or user into treating the skill as read-only and invoking it without the scrutiny normally required for non-read operations.
Content: No source excerpt is available for this finding.

Vague Triggers

Medium

Category: Not specified by scanner
Confidence: 97% confidence
Finding: The trigger phrase says to use this skill for ANY Zip Archive API request, which is overly broad and can cause the skill to be invoked in situations where it is not the best or safest match. While not directly enabling code execution, broad auto-invocation increases the chance of unintended tool use and compounds the misleading safety descriptions elsewhere in the file.
Content: No source excerpt is available for this finding.

Intent-Code Divergence

Medium

Category: Not specified by scanner
Confidence: 94% confidence
Finding: The safety section says untagged actions are reads, but the only listed untagged actions perform archive creation and extraction. This creates a dangerous trust signal that may cause automated agents to execute these actions directly even though they process and generate files, which can increase risk of unintended data handling or extraction of malicious archives.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.